Java 使用 Apache CXF 上传 JAX-RS 文件
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JAX-RS FileUpload with Apache CXF
提问by VWeber
I'm trying to upload a file with JAX-RS and TomEE's Apache CXF implementation (2.6.14), but the uploaded file is always null.
我正在尝试使用 JAX-RS 和 TomEE 的 Apache CXF 实现 (2.6.14) 上传文件，但上传的文件始终为空。
Here is the code:
这是代码：
@POST
@Path("/upload")
@Consumes(MediaType.MULTIPART_FORM_DATA)
public Response uploadFile(@Multipart(value = "file") @NotNull Attachment attachment) throws UnsupportedEncodingException {
try {
System.out.println(attachment);
return Response.ok("file uploaded").build();
} catch (Exception ex) {
logger.error("uploadFile.error():", ex);
return Response.status(Response.Status.INTERNAL_SERVER_ERROR).build();
}
}
and a very easy HTML-file for the upload:
以及用于上传的非常简单的 HTML 文件：
<form action="http://127.0.0.1:8080/eegrating/restapi/cashflowparameter/upload" method="post" enctype="multipart/form-data">
<p>File:<br>
<input name="file" type="file" size="50" maxlength="100000" accept="text/*">
<input type="submit" name="Submit" value="Send">
</p>
</form>
The request header looks fine:
请求标头看起来不错：
------WebKitFormBoundaryOCleIjB2JgeySK0w Content-Disposition: form-data; name="file"; filename="git.txt" Content-Type: text/plain
------WebKitFormBoundaryOCleIjB2JgeySK0w 内容配置：表单数据；名称=“文件”；filename="git.txt" 内容类型：文本/纯文本
But the attachment is always null. Any suggestions? Thanks in advance.
但附件始终为空。有什么建议？提前致谢。
采纳答案by Nestor Hernandez Loli
First, are you using Apache TomEE with JAX-RS?, if not you should, because this bundles JAX-RS. Try with this code. I'm using CXF specific features, I tested and works well. This resource just produces an HTML result, you can adapt it of course. As you see I referenced the CXF dependency as provided because TomEE includes it. I'm posting everyfile needed.
首先，您是否将 Apache TomEE 与 JAX-RS 一起使用？如果不是，您应该，因为它捆绑了 JAX-RS。尝试使用此代码。我正在使用 CXF 特定功能，经过测试并且运行良好。此资源仅生成 HTML 结果，您当然可以对其进行调整。如您所见，我引用了提供的 CXF 依赖项，因为 TomEE 包含它。我正在发布所需的每个文件。
No web.xml file.
没有 web.xml 文件。
META-INF/context.xml
META-INF/context.xml
<?xml version="1.0" encoding="UTF-8"?>
<Context antiJARLocking="true" path="/FileUpload_2"/>
index.jsp
索引.jsp
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<form method="POST" enctype="multipart/form-data"
action="/FileUpload_2/web/upload">
File to upload: <input type="file" name="upfile"><br/>
Notes about the file: <input type="text" name="note"><br/>
<br/>
<input type="submit" value="Press"> to upload the file!
</form>
</body>
</html>
upload.MyApplication.java
上传.MyApplication.java
package upload;
import java.util.*;
import javax.ws.rs.*;
import javax.ws.rs.core.*;
@ApplicationPath("web")
public class MyApplication extends Application {
@Override
public Set<Class<?>> getClasses() {
return new HashSet<Class<?>>(Arrays.asList(UploadResource.class ));
}
}
upload.UploadResource.java
上传.上传资源.java
package upload;
import java.io.*;
import java.nio.file.*;
import javax.ws.rs.*;
import javax.ws.rs.Path;
import javax.ws.rs.core.*;
import org.apache.cxf.jaxrs.ext.multipart.*;
public class UploadResource {
@POST
@Path("/upload")
@Produces(MediaType.TEXT_HTML)
@Consumes(MediaType.MULTIPART_FORM_DATA)
public String uploadFile(@Multipart("note") String note,
@Multipart("upfile") Attachment attachment) throws IOException {
String filename = attachment.getContentDisposition().getParameter("filename");
java.nio.file.Path path = Paths.get("c:/" + filename);
Files.deleteIfExists(path);
InputStream in = attachment.getObject(InputStream.class);
Files.copy(in, path);
return "uploaded " + note;
}
}
pom.xml
pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.mycompany</groupId>
<artifactId>FileUpload_2</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>FileUpload_2</name>
<properties>
<endorsed.dir>${project.build.directory}/endorsed</endorsed.dir>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-rt-frontend-jaxrs</artifactId>
<version>2.6.14</version>
<scope>provided</scope>
<exclusions>
<exclusion>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
</exclusion>
<exclusion>
<groupId>javax.ws.rs</groupId>
<artifactId>jsr311-api</artifactId>
</exclusion>
<exclusion>
<groupId>wsdl4j</groupId>
<artifactId>wsdl4j</artifactId>
</exclusion>
<exclusion>
<groupId>org.apache.ws.xmlschema</groupId>
<artifactId>xmlschema-core</artifactId>
</exclusion>
<exclusion>
<groupId>org.codehaus.woodstox</groupId>
<artifactId>woodstox-core-asl</artifactId>
</exclusion>
<exclusion>
<groupId>org.apache.geronimo.specs</groupId>
<artifactId>geronimo-javamail_1.4_spec</artifactId>
</exclusion>
<exclusion>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-rt-transports-http</artifactId>
</exclusion>
<exclusion>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-rt-core</artifactId>
</exclusion>
<exclusion>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-rt-bindings-xml</artifactId>
</exclusion>
<exclusion>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-api</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-web-api</artifactId>
<version>6.0</version>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
<compilerArguments>
<endorseddirs>${endorsed.dir}</endorseddirs>
</compilerArguments>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.1.1</version>
<configuration>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.1</version>
<executions>
<execution>
<phase>validate</phase>
<goals>
<goal>copy</goal>
</goals>
<configuration>
<outputDirectory>${endorsed.dir}</outputDirectory>
<silent>true</silent>
<artifactItems>
<artifactItem>
<groupId>javax</groupId>
<artifactId>javaee-endorsed-api</artifactId>
<version>6.0</version>
<type>jar</type>
</artifactItem>
</artifactItems>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
回答by Ram
For cxf specific (not jersey) your code could be as below
对于特定于 cxf（不是球衣），您的代码可能如下所示
@POST
@Path("/upload")
@Consumes(MediaType.MULTIPART_FORM_DATA)
public Response uploadFile(MultipartBody body) throws UnsupportedEncodingException {
try {
for(Attachment attachment : body.getAllAttachments()){
System.out.println(attachment);
}
return Response.ok("file uploaded").build();
} catch (Exception ex) {
logger.error("uploadFile.error():", ex);
return Response.status(Response.Status.INTERNAL_SERVER_ERROR).build();
}
}
your code is not working cause we have to pass specific contentIdto the @Multipart. the code look like as below
您的代码不起作用，因为我们必须将特定contentId的@Multipart. 代码如下所示
note*: contentIdis not your file property name that you are sending from client
注意*：contentId不是您从客户端发送的文件属性名称
@POST
@Path("/upload")
@Consumes(MediaType.MULTIPART_FORM_DATA)
public Response uploadFile(@Multipart(value="spcfic contentId", type="application/octet-stream") Attachment attachment) throws UnsupportedEncodingException {
...
...
}
I would suggest to use MultipartBodyinstead of @Multipart
我建议使用MultipartBody而不是@Multipart
refer : http://cxf.apache.org/docs/jax-rs-multiparts.html
参考：http: //cxf.apache.org/docs/jax-rs-multiparts.html
I shall be glad for any improvement or rectifying the content of the post :)
我会很高兴对帖子内容进行任何改进或纠正:)
