springboot使用fastJson作为json解析框架
springboot默认自带json解析框架,默认使用jackson,如果使用fastjson,可以按照下列方式配置使用
〇、搭建springbboot基础环境
一、添加依赖
<dependencies>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.15</version>
</dependency>
</dependencies>
二、在app.class(启动类)中的配置
配置方式一(通过继承的方式)
1、启动类继承WebMvcConfigurerAdapter
2、重写configureMessageConverters方法
@Override
public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
super.configureMessageConverters(converters);
/*
* 1、需要先定义一个convert转换消息的对象
* 2、添加fastJson的配置信息,比如:是否要格式化返回json数据
* 3、在convert中添加配置信息
* 4、将convert添加到converters当中
*
*/
//1、需要先定义一个·convert转换消息的对象;
FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();
//2、添加fastjson的配置信息,比如 是否要格式化返回json数据
FastJsonConfig fastJsonConfig = new FastJsonConfig();
fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat);
//3、在convert中添加配置信息.
fastConverter.setFastJsonConfig(fastJsonConfig);
//4、将convert添加到converters当中.
converters.add(fastConverter);
}
配置方式二(通过@Bean注入的方式)
@Bean
public HttpMessageConverters fastJsonHttpMessageConverters() {
// 1、需要先定义一个 convert 转换消息的对象;
FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();
//2、添加fastJson 的配置信息,比如:是否要格式化返回的json数据;
FastJsonConfig fastJsonConfig = new FastJsonConfig();
fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat);
//3、在convert中添加配置信息.
fastConverter.setFastJsonConfig(fastJsonConfig);
HttpMessageConverter<?> converter = fastConverter;
return new HttpMessageConverters(converter);
}
二、以第一种配置方式,测试验证一下:
准备一个Controller
import java.util.Date;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import com.xujie.pojo.Demo;
@RestController // 包括了@ResponseBody和Controller
public class UserController {
@GetMapping("/test")
public Demo test() {
Demo demo = new Demo();
demo.setId(1);
demo.setCreateTime(new Date());
demo.setName("demo22");
demo.setRemarks("这里是备注信息,不应该返回");
return demo;
}
}
启动类写法
import java.util.List;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
@SpringBootApplication
public class UserApplication extends WebMvcConfigurerAdapter {
public static void main(String[] args) {
SpringApplication.run(UserApplication.class, args);
}
@Override
public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
//1、需要先定义一个·convert转换消息的对象;
FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();
//2、添加fastjson的配置信息,比如 是否要格式化返回json数据
FastJsonConfig fastJsonConfig = new FastJsonConfig();
fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat);
//3、在convert中添加配置信息.
fastConverter.setFastJsonConfig(fastJsonConfig);
//4、将convert添加到converters当中.
converters.add(fastConverter);
}
}
pojo类
import java.util.Date;
import com.alibaba.fastjson.annotation.JSONField;
public class Demo {
private int id;
private String name;
//com.alibaba.fastjson.annotation.JSONField
@JSONField(format="yyyy-MM-dd HH:mm")
private Date createTime;//创建时间.
/*
* serialize:是否需要序列化属性.
*/
@JSONField(serialize=false)
private String remarks;//备注信息.
public String getRemarks() {
return remarks;
}
public void setRemarks(String remarks) {
this.remarks = remarks;
}
public Date getCreateTime() {
return createTime;
}
public void setCreateTime(Date createTime) {
this.createTime = createTime;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
浏览器测试
输入地址:http://localhost:8080/test
返回:
{ "createTime":"2018-02-23 12:06", "id":1, "name":"demo22" }