Spring中使用json和前端ajax交互

1. 包含相应的库

<!-- json -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.1.0</version>
</dependency>

<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.1.0</version>
</dependency>

<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.1.0</version>
</dependency>

2. Spring配置文件

<mvc:annotation-driven/>
<context:component-scan base-package=”your.project.package” />

3. 使用@ResponseBody注解

// 一个简单的JavaBean
public class User {
private String userName;
private String password;

public String getUserName() {
return userName;
}

public void setUserName(String userName) {
this.userName = userName;
}

public String getPassword() {
return password;
}

public void setPassword(String password) {
this.password = password;
}
}

// 控制器方法
@RequestMapping("/hello")
@ResponseBody
public User hello() {
User user = new User();
user.setUserName("JFK");
user.setPassword("123456");
return user;
}

4. 效果