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新增 非SpringBoot项目中文乱码解决方案.md
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# 非SpringBoot项目中文乱码解决方案
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前台页面向后台提交参数的时候,中文经常出现乱码问题,可以检查一下下边的配置。
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1.检查项目的编码是否为UTF-8
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2.设置tomcat服务的编码,在server.xml文件中修改为如下
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<Connector URIEncoding="UTF-8" port="8888" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" />
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3.在web.xml中添加编码过滤配置设置为UTF-8,这里使用springmvc的编码过滤
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```xml
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<?xml version="1.0" encoding="UTF-8"?>
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<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
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version="3.1">
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<!--方式一,使用默认配置
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默认读取的springmvc配置文件为/WEB-INF/<servlet-name>-servlet.xml
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-->
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<!-- <servlet>
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<servlet-name>springmvc</servlet-name>
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&lt;!&ndash; springMVC的入口,分发器,管家 ,分发器默认读取/WEB-INF/<servlet-name>-servlet.xml文件&ndash;&gt;
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<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
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&lt;!&ndash; 1表示tomcat启动的时候,springmvc也初始化 &ndash;&gt;
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<load-on-startup>1</load-on-startup>
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</servlet>
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<servlet-mapping>
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<servlet-name>springmvc</servlet-name>
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<url-pattern>/</url-pattern>&lt;!&ndash; /表示拦截所有请求,也可以 *.do *.html 等 &ndash;&gt;
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</servlet-mapping>-->
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<!--方式二,手动指定springmvc配置文件的路径
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推荐使用这种方式
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-->
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<servlet>
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<servlet-name>springmvc</servlet-name>
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<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
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<!-- 读取指定目录下的配置文件,名字可以改变
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*表示加载该目录以及子目录下的所有springmvc-servlet.xml
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不加*只会加载指定路径下的指定文件
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-->
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<init-param>
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<param-name>contextConfigLocation</param-name>
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<param-value>
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classpath*:configs/springmvc-annotaion-servlet.xml
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</param-value>
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</init-param>
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<load-on-startup>1</load-on-startup>
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</servlet>
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<servlet-mapping>
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<servlet-name>springmvc</servlet-name>
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<url-pattern>/</url-pattern><!-- /表示拦截所有请求,也可以 *.do *.html 等 -->
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</servlet-mapping>
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<!--编码过滤,使用spring的编码过滤类-->
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<filter>
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<filter-name>encodingFilter</filter-name>
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<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
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<init-param>
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<param-name>encoding</param-name><!--设置为那种编码-->
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<param-value>UTF-8</param-value>
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</init-param>
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<init-param>
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<param-name>forceEncoding</param-name><!--是否强制过滤-->
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<param-value>true</param-value>
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</init-param>
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</filter>
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<filter-mapping>
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<filter-name>encodingFilter</filter-name>
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<url-pattern>/*</url-pattern><!--那种请求需要编码过滤,这里对所有的请求进行编码过滤-->
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</filter-mapping>
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</web-app>
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```

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