Java 即使添加依赖项后，import org.springframework 也无法解析
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/20770294/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
import org.springframework cannot be resolve even after adding dependencies
提问by sharon Hwk
I get errors that say The import org.springframework cannot be resolvedfor all the imports. My POM.XML is as follows: i am sure that i have included all the necessary dependencies. No clue, why this is happening. Help
我收到The import org.springframework cannot be resolved所有进口商品的错误信息。我的 POM.XML 如下：我确信我已经包含了所有必要的依赖项。不知道为什么会这样。帮助
POM.XML
POM文件
<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.app.controller</groupId>
<artifactId>FirstController</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<name>webapp spring</name>
<url>http://maven.apache.org</url>
<properties>
<spring.version>4.0.0.RELEASE</spring.version>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<!-- Spring 3 dependencies -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
</dependencies>
<build>
<finalName>FirstController</finalName>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
FirstController.java
第一控制器.java
package my.controller;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
@Controller
@RequestMapping("/hi")
public class FirstController {
@RequestMapping(method = RequestMethod.GET)
public String printWelcome(ModelMap model) {
model.addAttribute("message", "Spring 3 MVC Hello LA");
return "hello";
}
}
回答by mtk
Check the output of
mvn clean install. And see if the concerned jar is being downloaded. Look into$HOME/.m2/repo/....to see if it is indeed present.In the IDE be sure you have configured the Build Path correctly (e.g. in eclipse, Right-click project, Build-Path, 3rd tab)
Besides, I guess it should be
pom.xml(lowercase) and notPOM.XML, as I believe case matters. But I guess you put that in the post unkownigly.
检查输出
mvn clean install。并查看是否正在下载相关的 jar。查看$HOME/.m2/repo/....它是否确实存在。在 IDE 中，确保您已正确配置构建路径（例如，在 Eclipse 中，右键单击项目，构建路径，第 3 个选项卡）
此外，我想它应该是
pom.xml（小写）而不是POM.XML，因为我认为大小写很重要。但我猜你是不知情地把它放在了帖子里。
回答by feng smith
I had met this problem just a moment ago, I just ran a spring mvc demo.My IDE is IntellJ, I just reimported all maven projects, everything is OK now. I just clicked the right top corner reimport all maven project button, everything is OK, you can have a try.
刚刚遇到这个问题，刚跑了一个spring mvc demo。我的IDE是IntellJ，我刚刚重新导入了所有maven项目，现在一切正常。我刚点了右上角的reimport all maven project按钮，一切正常，你可以试试。
回答by Marcel Bussien
I solved the problem by right click on the pom.xml in Eclipse and 'Maven Add Dependency'
org.springframework
spring-web
3.0.4.RELEASE
我通过右键单击 Eclipse 中的 pom.xml 和“Maven Add Dependency”解决了这个问题
org.springframework
spring-web
3.0.4.RELEASE
回答by Weidong Fang
My problem was that the M2_REPO variable was not configured properly.
我的问题是 M2_REPO 变量没有正确配置。
Solved by go to project Properties => Java Build Path => Add Variable => Configure Variables => New and added M2_REPO to be ~/.m2/repository.
通过转到项目属性 => Java 构建路径 => 添加变量 => 配置变量 => 新建并将 M2_REPO 添加到 ~/.m2/repository 来解决。
回答by Alina_Lapina
I ItelliJ: Maven Projects -> Reimport
I ItelliJ：Maven 项目 -> 重新导入
回答by Siddharth
I resolved it by deleting all the Problems (select all the Problems, delete it) and doing a Project Clean. This works for the the most stubborn of issues. For some reason Eclipse does not delete all the Problems before doing a clean.
我通过删除所有问题（选择所有问题，删除它）并进行项目清理来解决它。这适用于最顽固的问题。出于某种原因，Eclipse 在进行清理之前不会删除所有问题。
回答by Tan Dao
it's a very common issue with people who new to Eclipse with Maven. To fix just follow steps below:
对于刚接触 Maven 的 Eclipse 的人来说，这是一个非常常见的问题。要修复只需按照以下步骤操作：
- Select the project in Eclipse
- Right clich to open context menu.
- Select Maven/Update Project( or Alt + F5)
- 在 Eclipse 中选择项目
- 右键打开上下文菜单。
- 选择Maven/更新项目（或 Alt + F5）
Elipse then will reload/update new dependencies for you.
然后 Elipse 将为您重新加载/更新新的依赖项。
Happy coding!
快乐编码！
回答by Kunle Ajiboye
Just paste this in your pom.xml
只需将其粘贴到您的 pom.xml 中
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
回答by JavaSheriff
you are using annotations from later versions of Spring
Update your Spring version in the pom.xml to reflect a more current correct Spring version
您正在使用来自更高版本 Spring 的注释
在 pom.xml 中更新您的 Spring 版本以反映更当前正确的 Spring 版本
From
从
<spring.version>4.0.0.RELEASE</spring.version>
To
到
<spring.version>4.3.0.RELEASE</spring.version>
回答by Subodhi93
Simply change spring version from
只需将 spring 版本从
<spring.version>4.0.0.RELEASE</spring.version>
to
到
<spring.version>3.0.0.RELEASE</spring.version>
