Spring Boot教程(十一):Spring Boot集成fastjson

一、项目准备

直接使用上个章节的源码,Spring Boot教程(十):Spring Boot集成jsp

二、添加依赖

spring-boot-starter-web里去除spring-boot-starter-json依赖,添加fastjson依赖:

<!-- Spring Boot web启动器 -->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
    <exclusions>
        <exclusion>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-json</artifactId>
        </exclusion>
    </exclusions>
</dependency>
<!-- fastjson -->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>1.2.47</version>
</dependency>

三、配置fastjson

方法一:注入bean方式

在启动类Application里添加public HttpMessageConverters fastJsonHttpMessageConverters()方法:

package com.songguoliang.springboot;

import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.http.HttpMessageConverters;
import org.springframework.context.annotation.Bean;
import org.springframework.http.converter.HttpMessageConverter;
import tk.mybatis.spring.annotation.MapperScan;

/**
 * @Description
 * @Author sgl
 * @Date 2018-05-02 14:51
 */
@SpringBootApplication
@MapperScan("com.songguoliang.springboot.mapper")
public class Application{
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
    /**
     * 覆盖方法configureMessageConverters,使用fastJson
     * @return
     */
    @Bean
    public HttpMessageConverters fastJsonHttpMessageConverters() {
        //1、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
        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中
        HttpMessageConverter<?> converter = fastConverter;
        return new HttpMessageConverters(converter);
    }

}

方法二:重写configureMessageConverters()方法的方式

  1. 启动类实现org.springframework.web.servlet.config.annotation.WebMvcConfigurer接口
  2. 重写public void configureMessageConverters(List<HttpMessageConverter<?>> converters)方法。
package com.songguoliang.springboot;

import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import tk.mybatis.spring.annotation.MapperScan;

import java.util.List;

/**
 * @Description
 * @Author sgl
 * @Date 2018-05-02 14:51
 */
@SpringBootApplication
@MapperScan("com.songguoliang.springboot.mapper")
public class Application implements WebMvcConfigurer {
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }

    @Override
    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        //1、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
        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中
        converters.add(fastConverter);
    }
}

四、创建测试对象

创建一个model包,然后在该包里创建一个FastjsonTest实体,这个实体里,通过@JSONField注解,格式化date字段的值,并且不把ignore字段返回到前台,内容如下:

package com.songguoliang.springboot.model;

import com.alibaba.fastjson.annotation.JSONField;

import java.util.Date;

/**
 * @Description
 * @Author sgl
 * @Date 2018-05-08 13:50
 */
public class FastjsonTest {
    private Integer id;
    private String string;
    /**
     * 格式化日期
     */
    @JSONField(format = "yyyy-MM-dd HH:mm:ss")
    private Date date;

    /**
     * 转换为json时不包括该属性
     */
    @JSONField(serialize = false)
    private String ignore;

    //省略getter、setter
}

五、创建Controller

创建一个TestController,内容如下:

package com.songguoliang.springboot.controller;

import com.songguoliang.springboot.model.FastjsonTest;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.Date;

/**
 * @Description
 * @Author sgl
 * @Date 2018-05-08 13:55
 */
@RestController
public class TestController {

    @GetMapping("/fastjson")
    public FastjsonTest getFastJson() {
        FastjsonTest fastjsonTest = new FastjsonTest();
        fastjsonTest.setId(1);
        fastjsonTest.setString("fastjson test");
        fastjsonTest.setIgnore("ignore field");
        fastjsonTest.setDate(new Date());
        return fastjsonTest;
    }
}

六、启动服务查看测试结果

启动结果,在浏览器上输入:http://localhost:8080/fastjson,结果如下:
这里写图片描述

可以看到,date字段值的格式是我们设置好的yyyy-MM-dd HH:mm:ss,而且ignore字段没有显示出来。





源码:
github
码云

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转载自blog.csdn.net/gnail_oug/article/details/80239767