标签:vpd gdk 需要 hoj sdn new arc awb pmf
原文链接:http://www.jianshu.com/p/7097fea8ce3f
@ResponseBody用法
作用:
该注解用于将Controller的方法返回的对象,根据HTTP Request Header的Accept的内容,通过适当的HttpMessageConverter转换为指定格式后,写入到Response对象的body数据区。
使用时机:
返回的数据不是html标签的页面,而是其他某种格式的数据时(如json、xml等)使用.
配置返回JSON和XML数据
1.添加jackson依赖
<dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>2.5.4</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.5.4</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</artifactId> <version>2.5.4</version> </dependency>
2.开启<mvc:annotation-driven />
3.代码
@Controller
@RequestMapping("/user")
public class UserController {
@RequestMapping(value = "/query", method = RequestMethod.GET)
@ResponseBody
public User queryBasic() {
User user = new User();
user.setId(10);
user.setUserName("zhangsan");
user.setPassword("123456");
user.setSex(10);
user.setCreated(new Date());
return user;
}
}
User.java
public class User {
private Integer id;
// 用户名
private String userName;
// 密码
private String password;
// 性别,1男性,2女性
private Integer sex;
// 创建时间
private Date created;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
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;
}
public Integer getSex() {
return sex;
}
public void setSex(Integer sex) {
this.sex = sex;
}
public Date getCreated() {
return created;
}
public void setCreated(Date created) {
this.created = created;
}
@Override
public String toString() {
return "User{" +
"id=" + id +
", userName=‘" + userName + ‘\‘‘ +
", password=‘" + password + ‘\‘‘ +
", sex=" + sex +
", created=" + created +
‘}‘;
}
}
测试
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总结:
可以看到,想要返回json数据只要配置三个地方就可以了
1.jackson依赖
2.SpringMVC配置文件中加上<mvc:annotation-driven/>注解
3.Controller中的@ResponseBody注解
除此之外并不需要配置转换器什么的,当然这只是使用,其中的原理还是要去了解的
标签:vpd gdk 需要 hoj sdn new arc awb pmf
原文地址:http://www.cnblogs.com/winner-0715/p/6033462.html