j2ee乱码问题

[莫感]

j2ee乱码问题 怎么解决

例如str=request.getParameter("str");

得到的值是乱码,我要如何的解决

[xdshen]

顶4楼的

[jiaxinyuck110]

最简单的就是request.setcharacterencoding("gb2312")
如果你需要转化的字符地方比较多的话
写个过滤器filter具体的你个可以找些相关的资料看一下怎么写。

[BHD]

先要在页面中设置成“utf-8”编码,然后在接收参数时先写下以下代码，
request.setCharacterEncoding("utf-8");
request.setCharacterEncoding("utf-8");

[wz436392521]

9楼的可以了...

[15年老程创业中]

google找SetCharacterEncodingFilter

[莫感]

汗,废话

[kurt123]

写一个字符转换的函数，例如：
public class tostring {
public static String Decode(String s) {
try {
return new String(s.getBytes("ISO8859_1"), "gb2312");
}
catch (Exception e) {
return s;
}
}

[mellow_msb]

[Quote=引用 9 楼 jiaxinyuck110 的回复:]
最简单的就是request.setcharacterencoding("gb2312")
如果你需要转化的字符地方比较多的话
写个过滤器filter具体的你个可以找些相关的资料看一下怎么写。
[/Quote]
顶一个

[xuchanghao]

每次都手动转：String str=new String(request.getParameter("str").getBytes("ISO-8859-1"),"GB2312")


写一个字符转换的函数，例如：
public class tostring {
public static String Decode(String str) {
try {
return new String(str.getBytes("ISO-8859-1"), "gb2312");
}
catch (Exception e) {
return str;
}
}


还嫌麻烦的话就些个过滤器。

[flymaxdragon]

你到底在什么地方处理中文，什么情况下

[zygege]

这样的解决办法只能解决偶数个汉字乱码问题.如:"中国人民"可以正常转码,但"中国人",转码后则变成"中国口".故推荐一套100%解决方案:
客户端<a href="javascript:window.location.href='aaa.do?method=bbb&string=escape(escape(中国人))'">
服务器端
Escape.unescape(request.getParameter("string"));
附Escape代码:

/**
 * js加解密java实现类
 * @author zhangy
 *
 */
public class Escape {    
    private final static String[] hex = { "00", "01", "02", "03", "04", "05",    
    "06", "07", "08", "09", "0A", "0B", "0C", "0D", "0E", "0F", "10",    
    "11", "12", "13", "14", "15", "16", "17", "18", "19", "1A", "1B",    
    "1C", "1D", "1E", "1F", "20", "21", "22", "23", "24", "25", "26",    
    "27", "28", "29", "2A", "2B", "2C", "2D", "2E", "2F", "30", "31",    
    "32", "33", "34", "35", "36", "37", "38", "39", "3A", "3B", "3C",    
    "3D", "3E", "3F", "40", "41", "42", "43", "44", "45", "46", "47",    
    "48", "49", "4A", "4B", "4C", "4D", "4E", "4F", "50", "51", "52",    
    "53", "54", "55", "56", "57", "58", "59", "5A", "5B", "5C", "5D",    
    "5E", "5F", "60", "61", "62", "63", "64", "65", "66", "67", "68",    
    "69", "6A", "6B", "6C", "6D", "6E", "6F", "70", "71", "72", "73",    
    "74", "75", "76", "77", "78", "79", "7A", "7B", "7C", "7D", "7E",    
    "7F", "80", "81", "82", "83", "84", "85", "86", "87", "88", "89",    
    "8A", "8B", "8C", "8D", "8E", "8F", "90", "91", "92", "93", "94",    
    "95", "96", "97", "98", "99", "9A", "9B", "9C", "9D", "9E", "9F",    
    "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7", "A8", "A9", "AA",    
    "AB", "AC", "AD", "AE", "AF", "B0", "B1", "B2", "B3", "B4", "B5",    
    "B6", "B7", "B8", "B9", "BA", "BB", "BC", "BD", "BE", "BF", "C0",    
    "C1", "C2", "C3", "C4", "C5", "C6", "C7", "C8", "C9", "CA", "CB",    
    "CC", "CD", "CE", "CF", "D0", "D1", "D2", "D3", "D4", "D5", "D6",    
    "D7", "D8", "D9", "DA", "DB", "DC", "DD", "DE", "DF", "E0", "E1",    
    "E2", "E3", "E4", "E5", "E6", "E7", "E8", "E9", "EA", "EB", "EC",    
    "ED", "EE", "EF", "F0", "F1", "F2", "F3", "F4", "F5", "F6", "F7",    
    "F8", "F9", "FA", "FB", "FC", "FD", "FE", "FF" };    
   
    private final static byte[] val = { 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
    0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
    0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
    0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
    0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x00, 0x01,    
    0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x3F, 0x3F, 0x3F,    
    0x3F, 0x3F, 0x3F, 0x3F, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x3F,    
    0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
    0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
    0x3F, 0x3F, 0x3F, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x3F, 0x3F,    
    0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
    0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
    0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
    0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
    0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
    0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
    0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
    0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
    0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
    0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
    0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
    0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
    0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
    0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F };    
   
    /** *//**   
     * 编码 
     *    
     * @param s   
     * @return   
     */   
    public  static String escape(String s) {    
    StringBuffer sbuf = new StringBuffer();    
    int len = s.length();    
    for (int i = 0; i < len; i++) {    
    int ch = s.charAt(i);    
    if ('A' <= ch && ch <= 'Z') {    
    sbuf.append((char) ch);    
    } else if ('a' <= ch && ch <= 'z') {    
    sbuf.append((char) ch);    
    } else if ('0' <= ch && ch <= '9') {           
    sbuf.append((char) ch);    
    } else if (ch == '-' || ch == '_'     
    || ch == '.' || ch == '!' || ch == '~' || ch == '*'    
    || ch == '\'' || ch == '(' || ch == ')') {    
    sbuf.append((char) ch);    
    } else if (ch <= 0x007F) {    
    sbuf.append('%');    
    sbuf.append(hex[ch]);    
    } else {    
    sbuf.append('%');    
    sbuf.append('u');    
    sbuf.append(hex[(ch >>> 8)]);    
    sbuf.append(hex[(0x00FF & ch)]);    
    }    
    }    
    return sbuf.toString();    
    }    
   
    /** *//**   
     * 解码 说明：本方法保证 不论参数s是否经过escape()编码，均能得到正确的“解码”结果 
     *    
     * @param s   
     * @return   
     */   
    public static String unescape(String s) {    
    StringBuffer sbuf = new StringBuffer();    
    int i = 0;    
    int len = s.length();    
    while (i < len) {    
    int ch = s.charAt(i);    
    if ('A' <= ch && ch <= 'Z') {    
    sbuf.append((char) ch);    
    } else if ('a' <= ch && ch <= 'z') {     
    sbuf.append((char) ch);    
    } else if ('0' <= ch && ch <= '9') { 
sbuf.append((char) ch);    
    } else if (ch == '-' || ch == '_'|| ch == '.' || ch == '!' || ch == '~' || ch == '*'|| ch == '\'' || ch == '(' || ch == ')') {    
    sbuf.append((char) ch);    
    } else if (ch == '%') {    
    int cint = 0;    
    if ('u' != s.charAt(i + 1)) {    
    cint = (cint << 4) | val[s.charAt(i + 1)];    
    cint = (cint << 4) | val[s.charAt(i + 2)];    
    i += 2;    
    } else {    
    cint = (cint << 4) | val[s.charAt(i + 2)];    
    cint = (cint << 4) | val[s.charAt(i + 3)];    
    cint = (cint << 4) | val[s.charAt(i + 4)];    
    cint = (cint << 4) | val[s.charAt(i + 5)];    
    i += 5;    
    }    
    sbuf.append((char) cint);    
    } else {    
    sbuf.append((char) ch);    
    }    
    i++;    
    }    
    return sbuf.toString();    
    }    
   
     
}  

[baobei0506]

大哥 写个过滤器一次搞定呀

[leosming]

用过滤器

或者

写一个字符转换的函数，例如：
public class tostring {
public static String Decode(String s) {
try {
return new String(s.getBytes("ISO8859_1"), "gb2312");
}
catch (Exception e) {
return s;
}
}

[哒哒]

[Quote=引用楼主 silentJesse 的帖子:]
j2ee乱码问题 怎么解决

例如str=request.getParameter("str");

得到的值是乱码,我要如何的解决
[/Quote]
前面加段这行代码
request.setCharacterEncoding("gb2312");

[cbighead110]

支持17楼

[javatotheworld]

频繁转换的话最好写一个过滤器

[网络科技]

乱码问题比较麻烦,普通的还比较好解决,比如写过滤器、文件的类型统一、编码转换等等如楼上所说的，一般是可以解决的，除非你系统有问题或出错了。用ajax的话,出错乱码就比较烦了，有些根本就莫明其妙。

[guoyunsky]

不频繁传递中文的话，写个转换函数，楼上悠
频繁的话用过滤器

[hanhan7673]

16楼,看到你在群里发的消息,特地来看一下.
代码我可收藏啦~

[我很低调1234]

[Quote=引用 18 楼 leosming 的回复:]
用过滤器

或者

写一个字符转换的函数，例如：
public class tostring {
public static String Decode(String s) {
try {
return new String(s.getBytes("ISO8859_1"), "gb2312");
}
catch (Exception e) {
return s;
}
}
[/Quote]

顶……