Java 解析 JSON 的简单 Spring 代码

Question

提问by Ben

I'm a spring newbie. Wrote really simple code to get an array of JSON object from the API call at http://api.engin.umich.edu/hostinfo/...PONT&room=B505

我是春季新手。编写了非常简单的代码来从http://api.engin.umich.edu/hostinfo/...PONT&room=B505的 API 调用中获取一组 JSON 对象

Only get "Name: NULL"

只得到“名称：NULL”

import org.springframework.web.client.RestTemplate;

public class Application {
    public static void main(String args[]) {
        RestTemplate restTemplate = new RestTemplate();
        Computer[] computer = restTemplate.getForObject("http://api.engin.umich.edu/hostinfo/v1/computers.json?building=PIERPONT&room=B505", Computer[].class);
        System.out.println("Name:    " + computer[0].getName());
    }
}

Here goes the simple computer class.

这是简单的计算机课程。

package hello;
import org.codehaus.Hymanson.annotate.JsonIgnoreProperties;

@JsonIgnoreProperties(ignoreUnknown = true)
public class Computer {
    private String hostname;

    public String getName() {
        return hostname;
    }

    public String toString() {
        return "Computer [hostname=" + hostname + "]";
    }
}

Answer 1

采纳答案by Oscar Jara

Tested and working!

测试和工作！

Some observations:

一些观察：

If you don't know so much about Springframework, it doesn't matter. To serialize/deserializeJSONcan be done in many ways.
I have looked that your JSONcontains some reservedwords like classor string. In order to handle this you will need to use @JsonPropertyannotation (you will see it later at Computer.javaand others). I also used this annotation for not declaring some variablesthat in your JSONproperties contain underscores (remember that your DTO's[beans]must have the same structure, datatypesand also use the same JSONproperty names).
To resolve the problem regarding your RestTemplateobject(I am not sure if you are doing it the right way when using Computer[].class). As a recommendation, please consider following/checking this codesnippet: https://stackoverflow.com/a/6349488/1178686

如果你不太了解Springframework，也没关系。为了serialize/deserializeJSON可以在许多方面进行。
我已经看到你JSON包含一些reserved像class或这样的词string。为了处理这个问题，您将需要使用@JsonProperty注释（稍后您将在Computer.java和其他人看到它）。我也用这个注解没有报关一些variables在你的JSON属性包含下划线（记住，你DTO's[beans]必须有相同的structure，datatypes也使用相同的JSON属性名称）。
解决有关您的问题RestTemplateobject（我不确定您在使用时是否以正确的方式进行Computer[].class）。作为建议，请考虑遵循/检查此code代码段：https: //stackoverflow.com/a/6349488/1178686

This is just personal:If you consider this answer fits you requirement, don't forget to click the check next to the answer to select it, I am just typing this because you are new here, no offense.

这只是个人观点：如果您认为此答案符合您的要求，请不要忘记单击答案旁边的对勾以选择它，我只是输入此内容，因为您是新来的，无意冒犯。

Code:

代码：

I have implemented four classes, three of them as DTO's[beans]: Computer.java, Load.java, Location.javaand a test class: JSONParse.java. Please review the code!

我已经实现了四个班，其中三个为DTO's[beans]：Computer.java，Load.java，Location.java和测试class：JSONParse.java。请检查代码！

Computer.java

计算机.java

package com.example.dto;

import java.util.List;
import javax.xml.bind.annotation.XmlRootElement;
import org.codehaus.Hymanson.annotate.JsonProperty;

@XmlRootElement
public class Computer {

    private String hostname;
    private String vendor;
    private String model;
    private int swap;
    private int memory;
    @JsonProperty("sess_count")
    private int sessCount;
    private List<Load> load;
    @JsonProperty("in_use")
    private boolean inUse;
    @JsonProperty("free_in_tmp")
    private int freeInTmp;
    @JsonProperty("class")
    private String clazz;
    private List<Location> location;
    @JsonProperty("last_access")
    private String lastAccess;
    @JsonProperty("last_report")
    private int lastReport;
    private String ip;

    public String getHostname() {
        return hostname;
    }

    public void setHostname(String hostname) {
        this.hostname = hostname;
    }

    public String getVendor() {
        return vendor;
    }

    public void setVendor(String vendor) {
        this.vendor = vendor;
    }

    public String getModel() {
        return model;
    }

    public void setModel(String model) {
        this.model = model;
    }

    public int getSwap() {
        return swap;
    }

    public void setSwap(int swap) {
        this.swap = swap;
    }

    public int getMemory() {
        return memory;
    }

    public void setMemory(int memory) {
        this.memory = memory;
    }

    public int getSessCount() {
        return sessCount;
    }

    public void setSessCount(int sessCount) {
        this.sessCount = sessCount;
    }

    public List<Load> getLoad() {
        return load;
    }

    public void setLoad(List<Load> load) {
        this.load = load;
    }

    public boolean isInUse() {
        return inUse;
    }

    public void setInUse(boolean inUse) {
        this.inUse = inUse;
    }

    public int getFreeInTmp() {
        return freeInTmp;
    }

    public void setFreeInTmp(int freeInTmp) {
        this.freeInTmp = freeInTmp;
    }

    public String getClazz() {
        return clazz;
    }

    public void setClazz(String clazz) {
        this.clazz = clazz;
    }

    public List<Location> getLocation() {
        return location;
    }

    public void setLocation(List<Location> location) {
        this.location = location;
    }

    public String getLastAccess() {
        return lastAccess;
    }

    public void setLastAccess(String lastAccess) {
        this.lastAccess = lastAccess;
    }

    public int getLastReport() {
        return lastReport;
    }

    public void setLastReport(int lastReport) {
        this.lastReport = lastReport;
    }

    public String getIp() {
        return ip;
    }

    public void setIp(String ip) {
        this.ip = ip;
    }

    @Override
    public String toString() {
        String str = "=================================\r\n";
        str += "Hostname: " + hostname + "\r\n" +
                "Vendor: " + vendor + "\r\n" + 
                "Model: " + model + "\r\n" +
                "Swap: " + swap + "\r\n" +
                "Memory: " + memory + "\r\n" +
                "Sess_Count: " + sessCount + "\r\n" +
                "Load: " + "\r\n";

        for(Load ld : load) {
            str += "\t" + "One: " + ld.getOne() + "\r\n";
            str += "\t" + "Five: " + ld.getFive() + "\r\n";
            str += "\t" + "Fifteen: " + ld.getFifteen() + "\r\n";
        }

        str += "In_Use: " + inUse + "\r\n" +
                "Free_In_Tmp: " + freeInTmp + "\r\n" +
                "Class: " + clazz + "\r\n" +
                "Location: " + "\r\n";

        for(Location lc : location) {
            str += "\t" + "Building: " + lc.getBuilding() + "\r\n";
            str += "\t" + "Computers: " + lc.getComputers() + "\r\n";
            str += "\t" + "Room: " + lc.getRoom() + "\r\n";
            str += "\t" + "String: " + lc.getStr() + "\r\n";
        }

        str += "Ip: " + ip + "\r\n";
        str += "Last_Access: " + lastAccess + "\r\n";
        str += "Last_Report: " + lastReport + "\r\n";

        return str;     
    }
}

Load.java

加载程序

package com.example.dto;

import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement
public class Load {

    private int one;
    private int five;
    private int fifteen;

    public int getOne() {
        return one;
    }

    public void setOne(int one) {
        this.one = one;
    }

    public int getFive() {
        return five;
    }

    public void setFive(int five) {
        this.five = five;
    }

    public int getFifteen() {
        return fifteen;
    }

    public void setFifteen(int fifteen) {
        this.fifteen = fifteen;
    }

}

Location.java

位置.java

package com.example.dto;

import javax.xml.bind.annotation.XmlRootElement;

import org.codehaus.Hymanson.annotate.JsonProperty;

@XmlRootElement
public class Location {

    private String room;
    private String building;
    private String computers;
    @JsonProperty("string")
    private String str;

    public String getRoom() {
        return room;
    }

    public void setRoom(String room) {
        this.room = room;
    }

    public String getBuilding() {
        return building;
    }

    public void setBuilding(String building) {
        this.building = building;
    }

    public String getComputers() {
        return computers;
    }

    public void setComputers(String computers) {
        this.computers = computers;
    }

    public String getStr() {
        return str;
    }

    public void setStr(String str) {
        this.str = str;
    }

}

JSONParse.java: runnable classjust for testing purposes.

JSONParse.java：可运行class仅用于测试目的。

package com.example.main;

import java.io.IOException;
import java.net.URL;
import java.util.List;

import org.codehaus.Hymanson.JsonParseException;
import org.codehaus.Hymanson.map.DeserializationConfig.Feature;
import org.codehaus.Hymanson.map.JsonMappingException;
import org.codehaus.Hymanson.map.ObjectMapper;
import org.codehaus.Hymanson.type.TypeReference;

import com.example.dto.Computer;

public class JSONParse {

    public static void main(String args[]) throws JsonParseException, JsonMappingException, IOException {

        /* JSON provider */
        URL url = new URL("http://api.engin.umich.edu/hostinfo/v1/computers.json?building=PIERPONT&room=B505");

        ObjectMapper mapper = new ObjectMapper();

        /*
         * This allows the ObjectMapper to accept single values for a collection.
         * For example: "location" property in the returned JSON is a collection that 
         * can accept multiple objects but, in deserialization process, this property just 
         * have one object and causes an Exception.
         */
        mapper.configure(Feature.ACCEPT_SINGLE_VALUE_AS_ARRAY, true);

        /* 
         * If some JSON property is not present, avoid exceptions setting
         * FAIL_ON_UNKNOWN_PROPERTIES to false 
         */
        mapper.configure(Feature.FAIL_ON_UNKNOWN_PROPERTIES, false);

        /* Get all computers */
        List<Computer> computers = mapper.readValue(url, new TypeReference<List<Computer>>(){});

        /* Print each computer (previously overriding "toString()" method) */
        for(Computer computer : computers) {
            System.out.println(computer.toString());
        }

    }

}

Output from the above class:

上面的输出class：

=================================
Hostname: pierb505p13.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 0
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9608460
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.23
Last_Access: 
Last_Report: 1383202078

=================================
Hostname: pierb505p22.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 0
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9609244
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.32
Last_Access: 
Last_Report: 1383201987

=================================
Hostname: pierb505p06.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 0
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9606464
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.16
Last_Access: 
Last_Report: 1383201982

=================================
Hostname: pierb505p17.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 0
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9606820
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.27
Last_Access: 
Last_Report: 1383202064

=================================
Hostname: pierb505p15.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 0
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9609052
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.25
Last_Access: 
Last_Report: 1383202052

=================================
Hostname: pierb505p12.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 0
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9607136
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.22
Last_Access: 
Last_Report: 1383202037

=================================
Hostname: pierb505p03.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 0
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9603132
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.13
Last_Access: 
Last_Report: 1383201964

=================================
Hostname: pierb505p14.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 0
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9599592
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.24
Last_Access: 
Last_Report: 1383201996

=================================
Hostname: pierb505p07.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 0
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9608176
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.17
Last_Access: 
Last_Report: 1383202127

=================================
Hostname: pierb505p23.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 1
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9600968
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.33
Last_Access: 
Last_Report: 1383202013

=================================
Hostname: pierb505p11.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 1
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9607224
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.21
Last_Access: 
Last_Report: 1383202098

=================================
Hostname: pierb505p21.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 1
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9595136
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.31
Last_Access: 
Last_Report: 1383202035

=================================
Hostname: pierb505p16.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 1
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9601212
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.26
Last_Access: 
Last_Report: 1383202106

=================================
Hostname: pierb505p04.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 1
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9603220
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.14
Last_Access: 
Last_Report: 1383202135

=================================
Hostname: pierb505p08.engin.umich.edu
Vendor: Windows
Model: OptiPlex 980
Swap: 0
Memory: 0
Sess_Count: 0
Load: 
  One: 1
  Five: 5
  Fifteen: 15
In_Use: false
Free_In_Tmp: 16024588
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.18
Last_Access: 
Last_Report: 1383202133

=================================
Hostname: pierb505p25.engin.umich.edu
Vendor: Windows
Model: OptiPlex 980
Swap: 0
Memory: 0
Sess_Count: 0
Load: 
  One: 1
  Five: 5
  Fifteen: 15
In_Use: false
Free_In_Tmp: 10299356
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.35
Last_Access: 
Last_Report: 1383202100

=================================
Hostname: pierb505p26.engin.umich.edu
Vendor: Windows
Model: OptiPlex 980
Swap: 0
Memory: 0
Sess_Count: 0
Load: 
  One: 1
  Five: 5
  Fifteen: 15
In_Use: false
Free_In_Tmp: 11303888
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.36
Last_Access: 
Last_Report: 1383202027

=================================
Hostname: pierb505p19.engin.umich.edu
Vendor: Windows
Model: OptiPlex 980
Swap: 0
Memory: 0
Sess_Count: 0
Load: 
  One: 1
  Five: 5
  Fifteen: 15
In_Use: false
Free_In_Tmp: 15914176
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.29
Last_Access: 
Last_Report: 1383202081

=================================
Hostname: pierb505p09.engin.umich.edu
Vendor: Windows
Model: OptiPlex 980
Swap: 0
Memory: 0
Sess_Count: 0
Load: 
  One: 1
  Five: 5
  Fifteen: 15
In_Use: false
Free_In_Tmp: 29956064
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.19
Last_Access: 
Last_Report: 1383201997

=================================
Hostname: pierb505p10.engin.umich.edu
Vendor: Windows
Model: OptiPlex 980
Swap: 0
Memory: 0
Sess_Count: 0
Load: 
  One: 1
  Five: 5
  Fifteen: 15
In_Use: false
Free_In_Tmp: 19663960
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.20
Last_Access: 
Last_Report: 1383202003

=================================
Hostname: pierb505p24.engin.umich.edu
Vendor: Windows
Model: OptiPlex 980
Swap: 0
Memory: 0
Sess_Count: 0
Load: 
  One: 1
  Five: 5
  Fifteen: 15
In_Use: false
Free_In_Tmp: 19197988
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.34
Last_Access: 
Last_Report: 1383202038

=================================
Hostname: pierb505p20.engin.umich.edu
Vendor: Windows
Model: OptiPlex 980
Swap: 0
Memory: 0
Sess_Count: 0
Load: 
  One: 1
  Five: 5
  Fifteen: 15
In_Use: false
Free_In_Tmp: 9585536
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.30
Last_Access: 
Last_Report: 1383201994

=================================
Hostname: pierb505p13.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 0
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9608460
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.23
Last_Access: 
Last_Report: 1383202078

=================================
Hostname: pierb505p22.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 0
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9609244
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.32
Last_Access: 
Last_Report: 1383201987

=================================
Hostname: pierb505p06.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 0
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9606464
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.16
Last_Access: 
Last_Report: 1383201982

=================================
Hostname: pierb505p17.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 0
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9606820
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.27
Last_Access: 
Last_Report: 1383202064

=================================
Hostname: pierb505p15.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 0
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9609052
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.25
Last_Access: 
Last_Report: 1383202052

=================================
Hostname: pierb505p12.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 0
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9607136
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.22
Last_Access: 
Last_Report: 1383202037

=================================
Hostname: pierb505p03.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 0
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9603132
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.13
Last_Access: 
Last_Report: 1383201964

=================================
Hostname: pierb505p14.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 0
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9599592
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.24
Last_Access: 
Last_Report: 1383201996

=================================
Hostname: pierb505p07.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 0
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9608176
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.17
Last_Access: 
Last_Report: 1383202127

=================================
Hostname: pierb505p23.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 1
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9600968
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.33
Last_Access: 
Last_Report: 1383202013

=================================
Hostname: pierb505p11.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 1
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9607224
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.21
Last_Access: 
Last_Report: 1383202098

=================================
Hostname: pierb505p21.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 1
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9595136
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.31
Last_Access: 
Last_Report: 1383202035

=================================
Hostname: pierb505p16.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 1
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9601212
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.26
Last_Access: 
Last_Report: 1383202106

=================================
Hostname: pierb505p04.engin.umich.edu
Vendor: Linux
Model: Dell 980
Swap: 8126456
Memory: 7797
Sess_Count: 0
Load: 
  One: 1
  Five: 0
  Fifteen: 0
In_Use: false
Free_In_Tmp: 9603220
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.14
Last_Access: 
Last_Report: 1383202135

=================================
Hostname: pierb505p08.engin.umich.edu
Vendor: Windows
Model: OptiPlex 980
Swap: 0
Memory: 0
Sess_Count: 0
Load: 
  One: 1
  Five: 5
  Fifteen: 15
In_Use: false
Free_In_Tmp: 16024588
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.18
Last_Access: 
Last_Report: 1383202133

=================================
Hostname: pierb505p25.engin.umich.edu
Vendor: Windows
Model: OptiPlex 980
Swap: 0
Memory: 0
Sess_Count: 0
Load: 
  One: 1
  Five: 5
  Fifteen: 15
In_Use: false
Free_In_Tmp: 10299356
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.35
Last_Access: 
Last_Report: 1383202100

=================================
Hostname: pierb505p26.engin.umich.edu
Vendor: Windows
Model: OptiPlex 980
Swap: 0
Memory: 0
Sess_Count: 0
Load: 
  One: 1
  Five: 5
  Fifteen: 15
In_Use: false
Free_In_Tmp: 11303888
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.36
Last_Access: 
Last_Report: 1383202027

=================================
Hostname: pierb505p19.engin.umich.edu
Vendor: Windows
Model: OptiPlex 980
Swap: 0
Memory: 0
Sess_Count: 0
Load: 
  One: 1
  Five: 5
  Fifteen: 15
In_Use: false
Free_In_Tmp: 15914176
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.29
Last_Access: 
Last_Report: 1383202081

=================================
Hostname: pierb505p09.engin.umich.edu
Vendor: Windows
Model: OptiPlex 980
Swap: 0
Memory: 0
Sess_Count: 0
Load: 
  One: 1
  Five: 5
  Fifteen: 15
In_Use: false
Free_In_Tmp: 29956064
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.19
Last_Access: 
Last_Report: 1383201997

=================================
Hostname: pierb505p10.engin.umich.edu
Vendor: Windows
Model: OptiPlex 980
Swap: 0
Memory: 0
Sess_Count: 0
Load: 
  One: 1
  Five: 5
  Fifteen: 15
In_Use: false
Free_In_Tmp: 19663960
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.20
Last_Access: 
Last_Report: 1383202003

=================================
Hostname: pierb505p24.engin.umich.edu
Vendor: Windows
Model: OptiPlex 980
Swap: 0
Memory: 0
Sess_Count: 0
Load: 
  One: 1
  Five: 5
  Fifteen: 15
In_Use: false
Free_In_Tmp: 19197988
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.34
Last_Access: 
Last_Report: 1383202038

=================================
Hostname: pierb505p20.engin.umich.edu
Vendor: Windows
Model: OptiPlex 980
Swap: 0
Memory: 0
Sess_Count: 0
Load: 
  One: 1
  Five: 5
  Fifteen: 15
In_Use: false
Free_In_Tmp: 9585536
Class: L
Location: 
  Building: PIERPONT
  Computers: 26
  Room: B505
  String: B505 PIERPONT
Ip: 141.213.54.30
Last_Access: 
Last_Report: 1383201994

Enjoy!

享受！

Java 解析 JSON 的简单 Spring 代码

提问by Ben

采纳答案by Oscar Jara

Tested and working!

测试和工作！

Code:

代码：

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Java 解析 JSON 的简单 Spring 代码

提问by Ben

采纳答案by Oscar Jara

Tested and working!

测试和工作！

Code:

代码：

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