web乱码问题

String data = "不见青山";
ServletOutputStream sos = response.getOutputStream();
byte b[] = data.getBytes();  //默认用平台的gbk编码
sos.write(b)
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(1) response.setHeader("Content-Type", "text/html;charset=UTF-8");
(2) response.setContentType("text/html;charset=UTF-8");
String data = "不见青山";
ServletOutputStream sos = response.getOutputStream();
byte b[] = data.getBytes("UTF-8");  //默认用平台的gbk编码
sos.write(b)

字符
(1) response.setCharacterEncoding("UTF-8");
(2) response.setContentType("text/html;charset=UTF-8");
String data = "春天里";
PrintWriter pw = rsponse.getWriter();
pw.write(data)//默认用ISO-8859-1

以上为response响应乱码解决问题

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提交乱码

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web配置全局过滤器

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

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

    public void doFilter(ServletRequest request, ServletResponse response,
            FilterChain chain) throws IOException, ServletException {
        request.setCharacterEncoding("utf-8");
        response.setCharacterEncoding("utf-8");
        chain.doFilter(request, response);
    }

    public void destroy() {
    }
}

<filter>
    <filter-name>CodeFilter</filter-name>
    <filter-class>com.springMVC.filter.CodeFilter</filter-class>
  </filter>
  <filter-mapping>
    <filter-name>CodeFilter</filter-name>
    <url-pattern>*</url-pattern>
  </filter-mapping>