mysql 保存 blob 类型数据 乱码 解决

 

 

本人问题：mysql 保存 blob 类型数据 乱码 解决

未解决，？？？

 

之前 private string  archiveValue;    导致 写入的进去之后的中文 都是乱码

 

改正后 ，即可

private byte[] archiveValue;  // blob 

 

其他解决方法

http://knight-black-bob.iteye.com/blog/2213090

 

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字符串乱码解决

 

 

1. new String ( str .getBytes("iso8859-1","utf-8"));

 

 

2.<%@ page contentType="text/html; charset=UTF-8"%>

 

 

3.mysql  my.ini 

   [mysql]

   max_allowed_packet=500M 

   default-character-set=utf8

[mysqld]
character-set-server=utf8 
[client]
default-character-set = utf8
[mysql]
default-character-set = utf8

 

4.数据库 

  url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf8

  username=root

  password=root

有人说  url=jdbc:mysql://localhost:3306/test?useUnicode=true&amp;characterEncoding=utf8 

 

5.过滤器

 <filter>               
 <filter-name>encodingFilter</filter-name>                 
   <filter-class>  org.springframework.web.filter.CharacterEncodingFilter </filter-class>      <init-param>                    
      <param-name>encoding</param-name>                    
      <param-value>UTF-8</param-value>         
     </init-param>                
    <init-param>                  
     <param-name>forceEncoding</param-name>                    
     <param-value>false</param-value>               
    </init-param>        
 </filter>        
  <filter-mapping>                
  <filter-name>encodingFilter</filter-name>                
   <url-pattern>/*</url-pattern>       
  </filter-mapping>

 

6.添加@RequestMapping注解，配置produces的值

@RequestMapping(value = "/add", produces = {"application/json;charset=UTF-8"}) 

@RequestMapping(value = "/add", params = {"callback"}, produces = {"text/javascript;charset=UTF-8"}) 

 

 7. tomcat server.xml

  <Connector connectionTimeout="20000" port="8080" protocol="HTTP/1.1" redirectPort="8443" URIEncoding="UTF-8"/>

 

 8.  eclipse

  

 

  9.

  <action name="showOverAllXls" class="showOverAllDataAction" method="doXLS"> 
            <result name="success"  type="stream">
				<param name="contentType">
					application/octet-stream;charset=ISO-8859-1
				</param>
				<param name="contentDisposition">attachment;fileName="${fileName}"</param>
				<param name="inputName">downloadFile</param>
			</result>
        </action>

 

 

 10.sql 

CREATE DATABASE `db`
CHARACTER SET 'utf8'
COLLATE 'utf8_general_ci';

 

 11.

<constant name="struts.i18n.encoding" value="utf-8" />

 

 

 12.

HttpServletResponse response = null;
response = ServletActionContext.getResponse();
request.setCharacterEncoding(”utf-8″);
response.setContentType(”text/html;charset=utf-8″);