NO.31 Html,Jsp,Rtf中文乱码解决方法大搜集

<meta http-equiv='Content-Type' content='text/html; charset=GBK'>

 

知识库总目录： No.0 WebApplication开发知识库

    目前已总结Html、Jsp、Rtf的中文乱码解决方法，继续搜集中......（本文涉及字符集的均以GBK为例）

1.html中文乱码？

   在head区加入此句即可

 

2.JSP中文乱码？

    行首可有此行？

<%@ page contentType="text/html; charset=GBK"%>

 

3.使了上面一招JSP还显示乱码？

    OK，该经典的SetCharacterEncodingFilter上场了：）

package amosryan.web.control;

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

public class SetCharacterEncodingFilter implements Filter {

	protected String encoding;
	protected FilterConfig filterConfig;
	protected boolean ignore;

	public SetCharacterEncodingFilter() {
		encoding = null;
		filterConfig = null;
		ignore = true;
	}

	public void destroy() {
		encoding = null;
		filterConfig = null;
	}

	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
		if (ignore || request.getCharacterEncoding() == null) {
			String encode = selectEncoding(request);
			if (encode != null)
				request.setCharacterEncoding(encode);
		}
		chain.doFilter(request, response);
	}

	public void init(FilterConfig filterConfig2) throws ServletException {
		filterConfig = filterConfig2;
		encoding = filterConfig2.getInitParameter("encoding");
		String value = filterConfig2.getInitParameter("ignore");
		if (value == null)
			ignore = true;
		else if (value.equalsIgnoreCase("true"))
			ignore = true;
		else if (value.equalsIgnoreCase("yes"))
			ignore = true;
		else
			ignore = false;
	}

	protected String selectEncoding(ServletRequest request) {
		return encoding;
	}
}

    web.xml中的配置

 

    <filter>
        <filter-name>Set Character Encoding</filter-name>
        <filter-class> 
                            amosryan.web.control.SetCharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>ignore</param-name>
            <param-value>true</param-value>
        </init-param>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>GBK</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>Set Character Encoding</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

 

4.写RTF中文乱码？

    用这个方法过滤下

  private static final String LINE_BREAK = "{\\rtlch\\fcs1 \\af0 \\ltrch\\fcs0 \\loch\\af0\\hich\\af0\\dbch\\af31505\\insrsid15663546 \\par }";
  private static final String CN_HEAD = "\\loch\\af0\\hich\\af0\\dbch\\f31505";
  private static char[] digital = "0123456789ABCDEF".toCharArray();

	/**
	 * 字符串转换为rtf编码
	 * 
	 * @param content
	 * @return
	 */
	public static String strToRtf(String content) throws Exception {
		if (content == null) {
			return "";
		}
		boolean includeChinese = false;
		StringBuilder sb = new StringBuilder(1024);
		for (char c : content.toCharArray()) {
			if (!includeChinese) {
				int intC = (int) c;
				if (intC > 256) {
					includeChinese = true;
				}
			}
			sb.append(convert(c));
		}
		if (includeChinese) {
			sb.insert(0, CN_HEAD);
		}

		String rtfStr = sb.toString();
		rtfStr = rtfStr.replace("\\'0D\\'0A", LINE_BREAK);
		return rtfStr;
	}

	private static String convert(char c) throws Exception {
		byte[] bs = String.valueOf(c).getBytes("GBK");
		StringBuilder sb = new StringBuilder(256);
		for (int i = 0; i < bs.length; i++) {
			int bit = (bs[i] & 0x0f0) >> 4;
			sb.append("\\'");
			sb.append(digital[bit]);
			bit = bs[i] & 0x0f;
			sb.append(digital[bit]);
		}
		return sb.toString();
	}