解决struts2get请求乱码问题

àì夳堔傛蜴生んèń 2021-09-17 00:38 389阅读 0赞

package cn.itcast.pub;
    
    import java.io.IOException;
    import java.util.Map;
    import java.util.Set;
    
    import javax.servlet.Filter;
    import javax.servlet.FilterChain;
    import javax.servlet.FilterConfig;
    import javax.servlet.ServletException;
    import javax.servlet.ServletRequest;
    import javax.servlet.ServletResponse;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    public class CharFilter implements Filter {
    
    	private FilterConfig filterConfig = null;
    
    	public void destroy() {
    		this.filterConfig = null;
    	}
    
    	@SuppressWarnings("unchecked")
    	public void doFilter(ServletRequest req, ServletResponse response,
    			FilterChain chain) throws IOException, ServletException {
    		String encoding = this.filterConfig.getInitParameter("encoding");
    
    		HttpServletRequest request = (HttpServletRequest) req;
    		HttpServletResponse resp = (HttpServletResponse) response;
    		request.setCharacterEncoding(encoding);
    		resp.setContentType("text/html;charset="+encoding);
    		System.out.println(request.getQueryString());
    		// 处理GET参数
    		if (request.getMethod().equalsIgnoreCase("get")) {
    			Map paramMap = req.getParameterMap();
    			String[] queryStringArray = { "" };
    			if (request.getQueryString() != null) {
    				queryStringArray = request.getQueryString().split("&");
    			}
    			for (int i = 0; i < queryStringArray.length; i++) {
    				queryStringArray[i] = queryStringArray[i].replaceAll("(.*)=(.*)", "$1");
    			}
    			Set<String> keySet = paramMap.keySet();
    			for (String key : keySet) {
    				// check where param from
    				boolean isFromGet = false;
    				for (String paramFromGet : queryStringArray) {
    					if (key.equals(paramFromGet)) {
    						isFromGet = true;
    					}
    				}
    				if (!isFromGet) {
    					continue;
    				}
    				String[] paramArray = (String[]) paramMap.get(key);
    				for (int i = 0; i < paramArray.length; i++) {
    					paramArray[i] = new String(paramArray[i].getBytes("iso-8859-1"), encoding);
    				}
    			}
    		}
    		chain.doFilter(req, resp);
    	}
    
    	public void init(FilterConfig filterConfig) throws ServletException {
    		this.filterConfig = filterConfig;
    	}
    }