Question

我刚开始学习Spring Boot。我安装了STS并使用Web + JPA + MySQL + DevTools + Security创建了一个应用程序。当我创建我的控制器并用@RequestMapping注意它时，STS说RequestMapping无法解析为类型。

import org.springframework.stereotype.Controller;

@Controller
public class TestController {

    @RequestMapping("/test")    
    public String test() {
        return "test";
    }

}

修改

我的pom.xml

<?xml version="1.0" encoding="UTF-8"?>

http://maven.apache.org/xsd/maven-4.0.0.xsd“＆GT; 4.0.0

<groupId>com.heart</groupId>
<artifactId>echocardiogram</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>

<name>echocardiogram</name>
<description>Echocardiogram Management System</description>

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.0.1.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-data-jpa</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-security</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-test</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>

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

我该如何解决这个问题？

Answer 1

**您应该像Request / POST / PUT / DELETE这样添加RequestMethodType。**这里我们使用get方法来返回内容

@Controller
public class TestController {
    @RequestMapping(value="/test",method=RequestMethod.GET)    
    public String test() {
        return "test";
    }
}

Answer 2

检查POM并进行maven更新。确保你已导入

import org.springframework.web.bind.annotation.RequestMapping;

RequestMapping无法解析为某种类型

2 个答案: