解决struts1中文乱码问题
最近工作中遇到一些中文乱码的问题，其中包括在struts1框架下，通过form的打拼的属性值，如果为中文的话，在Action中得到值全部为“？”
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网上找了一些解决的方法，主要有两种，一是添加过滤器，二是重写 RequestProcessor。两种方法在我的系统中只有前者试验成功了，现在把这个解决方案分享一下，也算备份一下！
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首先，定义一个过滤器 SetCharacerEncodingFilter.java
import java.io.IOException;import javax.servlet.ServletException;import javax.servlet.ServletRequest;import javax.servlet.ServletResponse;import javax.servlet.Filter;import javax.servlet.FilterConfig;import javax.servlet.FilterChain;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;public class SetCharacterEncodingFilter extends HttpServlet implements Filter { protected String encoding = null; protected FilterConfig filterConfig = null; protected boolean ignore = true; /* * (non-Javadoc) * * @see javax.servlet.Filter#destroy() */ @Override public void destroy() { this.encoding = null; this.filterConfig = null; } /* * (non-Javadoc) * * @see javax.servlet.Filter#doFilter(javax.servlet.ServletRequest, * javax.servlet.ServletResponse, javax.servlet.FilterChain) */ public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { MyRequest req = new MyRequest((HttpServletRequest) request, this.encoding); chain.doFilter(req, response); } /* * (non-Javadoc) * * @see javax.servlet.Filter#init(javax.servlet.FilterConfig) */ public void init(FilterConfig filterConfig) throws ServletException { this.filterConfig = filterConfig; this.encoding = filterConfig.getInitParameter("encoding"); String value = filterConfig.getInitParameter("ignore"); if (value == null) { this.ignore = true; } else if (value.equalsIgnoreCase("true")) { this.ignore = true; } else if (value.equalsIgnoreCase("yes")) { this.ignore = true; } else { this.ignore = false; } } /* * */ protected String selectEncoding(ServletRequest request) { return (this.encoding); }}?然后，再定义一个代理请求MyRequest.java，这是关键，这个类来处理数据的编码方式的转换
new String(input.getBytes("ISO-8859-1"), "UTF-8"); import java.io.UnsupportedEncodingException;import javax.servlet.http.HttpServletRequest;public class MyRequest extends javax.servlet.http.HttpServletRequestWrapper { HttpServletRequest request; String formate; public MyRequest(HttpServletRequest request, String format) { super(request); this.request = request; this.format = format; } @Override public String[] getParameterValues(String name) { String strs[] = super.getParameterValues(name); for (int i = 0; i < strs.length; i++) { strs[i] = this.myEncoding(strs[i]); } return strs; } private String myEncoding(String input) { String output = ""; try { output = new String(input.getBytes("ISO-8859-1"), this.format); } catch (UnsupportedEncodingException e) { // TODO Auto-generated catch block e.printStackTrace(); } return output; }}?最后再把这个过滤器配置到web.xml中去。
<filter> <filter-name>Encoding</filter-name> <filter-class>com.asus.hzia.pms.server.SetCharacterEncodingFilter </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>?