第10讲SpringBoot集成FastJson

1.FastJson简介&＃xff1a;

Fastjson是一个Java语言编写的高性能功能完善的JSON库。它采用一种“假定有序快速匹配”的算法&＃xff0c;把JSON Parse的性能提升到极致&＃xff0c;是目前Java语言中最快的JSON库。Fastjson接口简单易用&＃xff0c;已经被广泛使用在缓存序列化、协议交互、Web输出、Android客户端等多种应用场景

2. 引入依赖&＃xff1a;pom.xml

<dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.31</version>
</dependency>


3. 配置FastJson:FastJsonConfiguration

package com.springboot.fastjson.config;import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;import java.util.ArrayList;
import java.util.List;/*** &＃64;Description:* &＃64;Author: zrblog* &＃64;CreateTime: 2018-09-25 22:52* &＃64;Version:v1.0*/
&＃64;Configuration
public class FastJsonConfiguration extends WebMvcConfigurerAdapter {&＃64;Overridepublic void configureMessageConverters(List<HttpMessageConverter<?>> converters) {FastJsonHttpMessageConverter fastJsonHttpMessageConverter &＃61; new FastJsonHttpMessageConverter();FastJsonConfig fastJsonConfig &＃61; new FastJsonConfig();fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat);//处理乱码问题List<MediaType> mediaTypes &＃61; new ArrayList<>();mediaTypes.add(MediaType.APPLICATION_JSON_UTF8);fastJsonHttpMessageConverter.setSupportedMediaTypes(mediaTypes);fastJsonHttpMessageConverter.setFastJsonConfig(fastJsonConfig);converters.add(fastJsonHttpMessageConverter);}
}

4. 编写Entity&＃xff1a;

• User.java

package com.springboot.fastjson.domain;/*** &＃64;Description:* &＃64;Author: zrblog* &＃64;CreateTime: 2018-09-25 23:05* &＃64;Version:v1.0*/
public class User {private Integer id;private String name;private String sex;public User() {super();}public User(Integer id, String name, String sex) {this.id &＃61; id;this.name &＃61; name;this.sex &＃61; sex;}public Integer getId() {return id;}public void setId(Integer id) {this.id &＃61; id;}public String getName() {return name;}public void setName(String name) {this.name &＃61; name;}public String getSex() {return sex;}public void setSex(String sex) {this.sex &＃61; sex;}
}

5. 编写Controller层&＃xff1a;

package com.springboot.fastjson.controller;import com.springboot.fastjson.domain.User;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;import java.util.ArrayList;
import java.util.List;/*** &＃64;Description:* &＃64;Author: zrblog* &＃64;CreateTime: 2018-09-25 23:04* &＃64;Version:v1.0*/
&＃64;RestController
public class UserController {&＃64;RequestMapping("users")public List<User> getAllUser() {List<User> userList &＃61; new ArrayList<User>();User user1 &＃61; new User(1,"zhagnsan1","男");User user2 &＃61; new User(2,"zhagnsan2","男");User user3 &＃61; new User(3,"zhagnsan3","男");User user4 &＃61; new User(4,"zhagnsan4","男");userList.add(user1);userList.add(user2);userList.add(user3);userList.add(user4);return userList;}&＃64;RequestMapping("hello")public String syHello() {return "Hello World";}
}

6. 测试&＃xff1a;访问 http://localhost:8080/users