SpringMVC解决数据传递中文乱码问题

方式一：在 tomcat 安装目录修改 server.xml 配置文件，设置编码。

<Connector  port="8080" protocol="HTTP/1.1"
			connectionTimeout="2000"
			redirectPort="8443"
			URIEncoding="utf-8"/> 

方式二：在 web.xml 中添加如下配置。

	<filter>
        <filter-name>encoding</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>
    </filter>
    <filter-mapping>
        <filter-name>encoding</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

方式三：添加EncodingFilter过滤器。

在 web.xml 中添加如下配置，需要根据实际项目配置 内的路径。

	<filter>
        <filter-name>encoding</filter-name>
        <filter-class>com.projectname.filter.EncodingFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>encoding</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

在项目路径下创建filter目录，在filter目录下创建EncodingFilter类过滤器。

package com.projectname.filter;

import javax.servlet.*;
import java.io.IOException;

public class EncodingFilter implements Filter {
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        servletRequest.setCharacterEncoding("utf-8");
        servletResponse.setContentType("text/html");
        servletResponse.setCharacterEncoding("utf-8");

        filterChain.doFilter(servletRequest, servletResponse);
    }

    public void destroy() {

    }
}