SpringBoot中自定义消息转化器

短命女 2023-10-18 16:27 145阅读 0赞

## 场景 ##

1.SpringBoot自动配置了消息转化器。

2.自定义消息转化器，只需要在类中添加消息转化器的@Bean,就会被SpringBoot自动加入到容器中。

## 实现 ##

项目搭建见专栏：

[https://blog.csdn.net/BADAO\_LIUMANG\_QIZHI/column/info/35688][https_blog.csdn.net_BADAO_LIUMANG_QIZHI_column_info_35688]

新建Controller

package com.example.demo.controller;
    
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
    
    import org.springframework.http.converter.StringHttpMessageConverter;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.ResponseBody;
    
    @Controller
    @EnableAutoConfiguration
    public class TestMessageConvertController {
     
     //定义消息转换器
     //SpringBoot默认配置了消息转换器
     @Bean
     public StringHttpMessageConverter stringHttpMessageConverter() {
      StringHttpMessageConverter stringHttpMessageConverter =new StringHttpMessageConverter(Charset.forName("ISO8859-1"));
      return stringHttpMessageConverter;
     }
     
     @RequestMapping("/testMessageConvert")
     @ResponseBody
     public String testMessageConvert() {
      return "你好！！！";
     }
     public static void main(String[] args) {
      SpringApplication.run(TestMessageConvertController.class, args);
     }
    }

运行项目，打开浏览器输入：

[http://localhost:8080/testMessageConvert][http_localhost_8080_testMessageConvert]

![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70][]

由此可见，SpringBoot自带编码过滤器，即使是中文也不会乱码。

### 实现自定义编码过滤器 ###

package com.example.demo.controller;
    
    import java.nio.charset.Charset;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
    import org.springframework.context.annotation.Bean;
    import org.springframework.http.converter.StringHttpMessageConverter;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.ResponseBody;
    
    @Controller
    @EnableAutoConfiguration
    public class TestMessageConvertController {
     
     //定义消息转换器
     //SpringBoot默认配置了消息转换器
     @Bean
     public StringHttpMessageConverter stringHttpMessageConverter() {
      StringHttpMessageConverter stringHttpMessageConverter =new StringHttpMessageConverter(Charset.forName("ISO8859-1"));
      return stringHttpMessageConverter;
     }
     
     @RequestMapping("/testMessageConvert")
     @ResponseBody
     public String testMessageConvert() {
      return "你好！！！";
     }
     public static void main(String[] args) {
      SpringApplication.run(TestMessageConvertController.class, args);
     }
    }

再运行项目，刷新浏览器

![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 1][]

### 源码下载 ###

[https://download.csdn.net/download/badao\_liumang\_qizhi/11074223][https_download.csdn.net_download_badao_liumang_qizhi_11074223]

[https_blog.csdn.net_BADAO_LIUMANG_QIZHI_column_info_35688]: https://blog.csdn.net/BADAO_LIUMANG_QIZHI/column/info/35688
[http_localhost_8080_testMessageConvert]: http://localhost:8080/testMessageConvert
[Image 1]: 
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20190330112722466.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20190330112737728.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70
[https_download.csdn.net_download_badao_liumang_qizhi_11074223]: https://download.csdn.net/download/badao_liumang_qizhi/11074223