Question

我在Spring开始了一个教程。

我下载了Spring Tool Suite，然后创建了作为模板提供的demo项目，然后创建了一个类并编写了以下代码：

package com.example;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
public class WhateverIWant {

    @RequestMapping("/hi")
    public @ResponseBody String hiThere() {
        return "hello world!";
    }
}

问题在于无法识别ResponseBody和RequestMapping。

我右键单击了该项目并执行了Run As然后mvn clean和mvn install，但仍然无法识别依赖项。

我的pom.xml：

<?xml version="1.0" encoding="UTF-8"?>
<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.example</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>demo</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.1.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


</project>

如何让Spring Tool Suite了解依赖关系？

Answer 1

问题在于ResponseBody和RequestMapping不是识别。

您在pom。

中缺少以下依赖项

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>${spring.version}</version>
    </dependency>

Answer 2

添加spring-web jar

 <dependency>
      <groupId>org.springframework</groupId>
       <artifactId>spring-webmvc</artifactId>
       <version>3.2.3.RELEASE</version>
 </dependency>

Spring Tool Suite中未解析Spring依赖项

2 个答案: