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  • URLDecoder异常解决方法
    2021-06-09 06:36:51

    URLDecoder对参数进行解码时候,代码如:

    URLDecoder.decode(param,"utf-8");

    有时候会出现类似如下的错误:

    URLDecoder异常Illegal hex characters in escape (%)

    这是因为传参有一些特殊字符,比如%号或者说+号,导致不能解析,报错

    解决方法是:

    public static String replacer(StringBuffer outBuffer) {

    String data = outBuffer.toString();

    try {

    data = data.replaceAll("%(?![0-9a-fA-F]{2})", "%25");

    data = data.replaceAll("\\+", "%2B");

    data = URLDecoder.decode(data, "utf-8");

    } catch (Exception e) {

    e.printStackTrace();

    }

    return data;

    }

    URLDecoder源码:

    public static String decode(String s, String enc)

    throws UnsupportedEncodingException{

    boolean needToChange = false;

    int numChars = s.length();

    StringBuffer sb = new StringBuffer(numChars > 500 ? numChars / 2 : numChars);

    int i = 0;

    if (enc.length() == 0) {

    throw new UnsupportedEncodingException ("URLDecoder: empty string enc parameter");

    }

    char c;

    byte[] bytes = null;

    while (i < numChars) {

    c = s.charAt(i);

    switch (c) {

    case '+':

    sb.append(' ');

    i++;

    needToChange = true;

    break;

    case '%':

    /*

    * Starting with this instance of %, process all

    * consecutive substrings of the form %xy. Each

    * substring %xy will yield a byte. Convert all

    * consecutive bytes obtained this way to whatever

    * character(s) they represent in the provided

    * encoding.

    */

    try {

    // (numChars-i)/3 is an upper bound for the number

    // of remaining bytes

    if (bytes == null)

    bytes = new byte[(numChars-i)/3];

    int pos = 0;

    while ( ((i+2) < numChars) &&

    (c=='%')) {

    int v = Integer.parseInt(s.substring(i+1,i+3),16);

    if (v < 0)

    throw new IllegalArgumentException("URLDecoder: Illegal hex characters in escape (%) pattern - negative value");

    bytes[pos++] = (byte) v;

    i+= 3;

    if (i < numChars)

    c = s.charAt(i);

    }

    // A trailing, incomplete byte encoding such as

    // "%x" will cause an exception to be thrown

    if ((i < numChars) && (c=='%'))

    throw new IllegalArgumentException(

    "URLDecoder: Incomplete trailing escape (%) pattern");

    sb.append(new String(bytes, 0, pos, enc));

    } catch (NumberFormatException e) {

    throw new IllegalArgumentException(

    "URLDecoder: Illegal hex characters in escape (%) pattern - "

    + e.getMessage());

    }

    needToChange = true;

    break;

    default:

    sb.append(c);

    i++;

    break;

    }

    }

    return (needToChange? sb.toString() : s);

    }

    更多相关内容
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  • 主要介绍了java 使用 URLDecoder 和 URLEncoder 对中文字符进行编码和解码,文中通过示例代码介绍的非常详细,对大家的学习或者工作具有一定的参考学习价值,需要的朋友们下面随着小编来一起学习学习吧
  • 主要给大家介绍了关于java中URLEncoder.encode与URLDecoder.decode处理url特殊参数的方法,文中介绍的非常详细,需要的朋友可以参考借鉴,下面来一起看看吧。
  • HTML 格式编码的实用工具类。该类包含了将 String 转换为 application/x-www-form-urlencoded MIME 格式的静态方法。下文通过实例代码给大家介绍Java中的UrlDecoder 和 UrlEncoder知识,感兴趣的的朋友一起看看吧
  • URLDecoder

    2011-03-11 14:57:24
    URLDecoder URLDecoder URLDecoder URLDecoder URLDecoder URLDecoder URLDecoder URLDecoder URLDecoder URLDecoder URLDecoder URLDecoder URLDecoder URLDecoder URLDecoder URLDecoder
  • URLDecoder失败

    2019-09-17 06:54:37
    System.out.println(URLDecoder.decode("%u82CF%u5DDE", "UTF-8")); %u82CF%u5DDE 是从前台传递过来的参数,以上语句在执行的时候,控制台报错 Exception in thread "main" java.lang.I...
    System.out.println(URLDecoder.decode("%u82CF%u5DDE", "UTF-8"));

    %u82CF%u5DDE 是从前台传递过来的参数, 以上语句在执行的时候,控制台报错

    Exception in thread "main" java.lang.IllegalArgumentException: URLDecoder: Illegal hex characters in escape (%) pattern - For input string: "u8"
    	at java.net.URLDecoder.decode(URLDecoder.java:192)
    	at demo.Test.main(Test.java:115)

    在网上直接找到了一个工具类,能实现 Javascript中escape()及unescape()式的编解码,源代码如下:

    package demo;
    
    import org.apache.commons.lang3.StringEscapeUtils;
    
    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
    		    };
    		    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 (ch == ' ') {                        // space : map to '+' 
    		                sbuf.append('+');
    		            } else if ('A' <= ch && ch <= 'Z') {    // 'A'..'Z' : as it was
    		                sbuf.append((char)ch);
    		            } else if ('a' <= ch && ch <= 'z') {    // 'a'..'z' : as it was
    		                sbuf.append((char)ch);
    		            } else if ('0' <= ch && ch <= '9') {    // '0'..'9' : as it was
    		                sbuf.append((char)ch);
    		            } else if (ch == '-' || ch == '_'       // unreserved : as it was
    		                || ch == '.' || ch == '!'
    		                || ch == '~' || ch == '*'
    		                || ch == '/' || ch == '('
    		                || ch == ')') {
    		                sbuf.append((char)ch);
    		            } else if (ch <= 0x007F) {              // other ASCII : map to %XX
    		                sbuf.append('%');
    		                sbuf.append(hex[ch]);
    		            } else {                                // unicode : map to %uXXXX
    		                sbuf.append('%');
    		                sbuf.append('u');
    		                sbuf.append(hex[(ch >>> 8)]);
    		                sbuf.append(hex[(0x00FF & ch)]);
    		            }
    }
    		        return sbuf.toString();
    		    }
    		    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 (ch == '+') {                        // + : map to ' ' 
    		                sbuf.append(' ');
    		            } else if ('A' <= ch && ch <= 'Z') {    // 'A'..'Z' : as it was
    		                sbuf.append((char)ch);
    		            } else if ('a' <= ch && ch <= 'z') {    // 'a'..'z' : as it was
    		                sbuf.append((char)ch);
    		            } else if ('0' <= ch && ch <= '9') {    // '0'..'9' : as it was
    		                sbuf.append((char)ch);
    		            } else if (ch == '-' || ch == '_'       // unreserved : as it was
    		                || ch == '.' || ch == '!'
    		                || ch == '~' || ch == '*'
    		                || ch == '/' || ch == '('
    		                || ch == ')') {
    		                sbuf.append((char)ch);
    		            } else if (ch == '%') {
    		                int cint = 0;
    		                if ('u' != s.charAt(i+1)) {         // %XX : map to ascii(XX)
    		                    cint = (cint << 4) | val[s.charAt(i+1)];
    		                    cint = (cint << 4) | val[s.charAt(i+2)];
    		                    i+=2;
    		                } else {                            // %uXXXX : map to unicode(XXXX)
    		                    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);
    		            }
    		            i++;
    		        }
    		        return sbuf.toString();
    		    }
    		    public static void main(String[] args) {
    		        String stest = "苏州";
    		        System.out.println(stest);
    		        System.out.println(escape(stest));
    		        System.out.println(unescape("%u82CF%u5DDE"));
    		    }
    }
    

     

    转载于:https://my.oschina.net/xqysun/blog/919610

    展开全文
  • URLDecoder.decode(title, "utf-8") 使用URLDecoder对标题进行解码报异常: java.lang.IllegalArgumentException: URLDecoder: Illegal hex characters in escape (%) pattern - For input string: "xxx" 原因: ...

    问题:使用URLDecoder对标题进行解码报异常。

    URLDecoder.decode(title, "utf-8")
    

    异常信息:

    java.lang.IllegalArgumentException: URLDecoder: Illegal hex characters in escape (%) pattern - For input string: "xxx"
    

    原因: 通过URLDecoder.decode方法源码可以看出,当编码字符串中含有%号和+号时,方法有特殊处理逻辑,导致%号会抛出异常,+号会转换成空格,源码如下:

    public static String decode(String s, String enc)
            throws UnsupportedEncodingException{
    
            boolean needToChange = false;
            int numChars = s.length();
            StringBuffer sb = new StringBuffer(numChars > 500 ? numChars / 2 : numChars);
            int i = 0;
    
            if (enc.length() == 0) {
                throw new UnsupportedEncodingException ("URLDecoder: empty string enc parameter");
            }
    
            char c;
            byte[] bytes = null;
            while (i < numChars) {
                c = s.charAt(i);
                switch (c) {
                case '+':
                    sb.append(' ');
                    i++;
                    needToChange = true;
                    break;
                case '%':
                    /*
                     * Starting with this instance of %, process all
                     * consecutive substrings of the form %xy. Each
                     * substring %xy will yield a byte. Convert all
                     * consecutive  bytes obtained this way to whatever
                     * character(s) they represent in the provided
                     * encoding.
                     */
    
                    try {
    
                        // (numChars-i)/3 is an upper bound for the number
                        // of remaining bytes
                        if (bytes == null)
                            bytes = new byte[(numChars-i)/3];
                        int pos = 0;
    
                        while ( ((i+2) < numChars) &&
                                (c=='%')) {
                            int v = Integer.parseInt(s.substring(i+1,i+3),16);
                            if (v < 0)
                                throw new IllegalArgumentException("URLDecoder: Illegal hex characters in escape (%) pattern - negative value");
                            bytes[pos++] = (byte) v;
                            i+= 3;
                            if (i < numChars)
                                c = s.charAt(i);
                        }
    
                        // A trailing, incomplete byte encoding such as
                        // "%x" will cause an exception to be thrown
    
                        if ((i < numChars) && (c=='%'))
                            throw new IllegalArgumentException(
                             "URLDecoder: Incomplete trailing escape (%) pattern");
    
                        sb.append(new String(bytes, 0, pos, enc));
                    } catch (NumberFormatException e) {
                        throw new IllegalArgumentException(
                        "URLDecoder: Illegal hex characters in escape (%) pattern - "
                        + e.getMessage());
                    }
                    needToChange = true;
                    break;
                default:
                    sb.append(c);
                    i++;
                    break;
                }
            }
    
            return (needToChange? sb.toString() : s);
        }
    

    解决方法:参照ASCII编码表,将%号和+号先替换在解码。代码如下:

    title = title.replaceAll("%(?![0-9a-fA-F]{2})", "%25");
    title = title.replaceAll("\\+", "%2B")
    title = URLDecoder.decode(title);
    
    # 这里使用了一个特殊正则表达式:零宽负向先行断言(zero-widthnegative lookahead assertion),模式为(?!pattern),代表字符串中的一个位置,紧接该位置之后的字符序列不能匹配pattern。
    # %(?![0-9a-fA-F]{2})意思是'%'开始,不匹配%后面两位为数字或字母(包括大小写)的字符;这样就把正确的排除掉了,剩下的就是需要匹配替换的。
    

    参考链接:

    1. https://codeantenna.com/a/rVm18ZjBKT
    展开全文
  • public static String encode(String s, String enc) throws UnsupportedEncodingException urlEncoder和urlDecoder的作用和使用 1.URLEncoder.encode(String s, String enc) 使用指定的编码机制将字符串转换为 ...

    URLEncoder到底是干什么用的??

    都说是对form表单里的请求编码解码用的,但是为什么在写中文文件下载的时候也用到了。
    就是说国际通用的编码对中文支持不好,所以需要对着玩意进行转换。
    因为中文读取的时候你不给一个编码,它可能就用别的编码(不一定适合中文)就会导致乱码,所以就要写明编码了。
    HTML 格式编码的实用工具类。该类包含了将 String 转换为 application/x-www-form-urlencoded MIME 格式的静态方法 一般是对中文编码用的,比如get方式提交表单,如果有中文,常需要用该类对其编码。 地址栏中,常能看到像“乱码”的东东,有些就是该类对中文编码后的结果

    URLEncoder的作用

    URLEncoder是什么

    是HTML 格式编码的实用工具类。该类包含了将 String 转换为 application/x-www-form-urlencoded MIME 格式的静态方法。
    对 String 编码时,使用以下规则:

    • 字母数字字符 “a” 到 “z”、“A” 到 “Z” 和 “0” 到 “9” 保持不变。
    • 特殊字符 “.”、"-"、"*" 和 "_"保持不变。
    • 空格字符 " " 转换为一个加号 “+”。
    • 所有其他字符都是不安全的,因此首先使用一些编码机制将它们转换为一个或多个字节。然后每个字节用一个包含 3 个字符的字符串 "%xy"表示,其中 xy 为该字节的两位十六进制表示形式。推荐的编码机制是 UTF-8。

    为什么需要URLEncoder

    在URI的最初设计时,希望能通过书面转录,因此URI的构成字符必须是可写的ASCII字符。在这些可书写的字符里,由于一些字符在不同操作系统的编码有不同的解析,被包含在“不安全字符”之中,要格外注意。

    那哪些字符是需要转化的呢?

    1. ASCII 的控制字符
      这些字符都是不可打印的,自然需要进行转化。
    2. 一些非ASCII字符
      这些字符自然是非法的字符范围。转化也是理所当然的了。
    3. 一些保留字符
      很明显最常见的就是“&”了,这个如果出现在url中了,那你认为是url中的一个字符呢,还是特殊的参数分割用的呢?
    4. 就是一些不安全的字符了。
      例如:空格。为了防止引起歧义,需要被转化为“+”。
      url转义其实也只是为了符合url的规范。因此,URLEncoder只是为了url中一些非ascii字符,可以正确无误的被传输。

    URLEncoder怎么使用

    //使用指定的编码机制将字符串转换为 application/x-www-form-urlencoded 格式。此方法提供了获取不安全字节字符的编码方案。
    public static String encode(String s, String enc) throws UnsupportedEncodingException
    

    urlEncoder和urlDecoder的作用和使用

    1.URLEncoder.encode(String s, String enc)
    使用指定的编码机制将字符串转换为 application/x-www-form-urlencoded 格式

    URLDecoder.decode(String s, String enc)
    使用指定的编码机制对 application/x-www-form-urlencoded 字符串解码。

    2.发送的时候使用URLEncoder.encode编码,接收的时候使用URLDecoder.decode解码,都按指定的编码格式进行编码、解码,可以保证不会出现乱码

    3.主要用来http get请求不能传输中文参数问题。http请求是不接受中文参数的。

    这就需要发送方,将中文参数encode,接收方将参数decode,这样接收方就能收到准确的原始字符串了。

    如:

    String testString = "abcdefghijk";
            try
            {
                String encoderString = URLEncoder.encode(testString, "utf-8");
                System.out.println(encoderString);
                String decodedString = URLDecoder.decode(encoderString, "utf-8");
                System.out.println(decodedString);
            } catch (UnsupportedEncodingException e)
            {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
    
    输出:
    abcdefghijk%E6%BD%98%E5%AD%A6%E5%86%9B
    abcdefghijk
    
    展开全文
  • JAVA使用URLEncoder、URLDecoder编码解码
  • URLDecoder-crx插件

    2021-04-02 02:24:10
    语言:English 快速无缝地解码URL和base64编码的字符串 一个简单的工具,用于解码百分比编码的URL以及转义的JSON字符串和base64编码的字符串。 将最近5个网址保留在最新列表中,以便您可以返回它们。...
  • Java URLDecoder和URLEncoder

    2021-09-29 14:21:26
    URLDecoder和URLEncoder用于完成普通字符串和application/x-www-form-urlencoded MIME字符串之间的相互转换。...编程过程中可能涉及普通字符串和这种特殊字符串的相关转换,这就需要使用URLDecoder和URLEn...
  • URLDecoder解码报错

    2020-12-28 20:09:22
    报错:URLDecoder: Illegal hex characters in escape (%) pattern - For input string: "^Y" 原因:是因为URLDecoder解码中的源码里,如果编码字符串中含有%号和加号,就会自动抛出该异常 解决方法:先进行替换,...
  • origialStr=URLDecoder.decode(origialStr,"utf-8"); }catch(UnsupportedEncodingException e) { // TODO Auto-generated catch block e.printStackTrace(); } System.out.println("解码后的字符串为:"+...
  • 主要介绍了java 使用URLDecoder和URLEncoder对中文进行处理的相关资料,需要的朋友可以参考下
  • java基础之URLDecoder异常解决方法

    千次阅读 2019-09-07 20:10:38
    URLDecoder异常Illegal hex characters in escape (%)
  • 主要为大家详细介绍了UrlDecoder和UrlEncoder使用方法,具有一定的参考价值,感兴趣的小伙伴们可以参考一下
  • System.out.println(java.net.URLDecoder.decode(name, "UTF-8")); //测试 System.out.println(name); //%E6%B5%8B%E8%AF%95 name = java.net.URLEncoder.encode(name, "UTF-8"); System.out.println...
  • URLDecoder类包含一个decode(String s,String charcter)静态方法,它可以将看上去乱码的特殊字符串转换成普通字符串 URLEncoder类包含一个encode(String s,String charcter)静态方法,它可以将普通字符串转换成...
  • URLDecoder类和URLEncoder类的功能是,完成普通字符串和application/x-www-form-urlencoded MIME 字符串之间的相互转换。application/x-www-form-urlencoded MIME 虽然不是普通的字符串,但是在现实应用中经常见到,...
  • java中的URLEncoder和URLDecoder类.docx
  • String decodeURL = URLDecoder.decode(decodeURL, "UTF-8"); //抛出异常需要特殊处理 String decodeURL = decodeURL.replaceAll("%(?![0-9a-fA-F]{2})", "%25"); String decodeURL = URLDecode
  • 一、为什么需要urlEncode URLEncode 简单一句话,URLEncoding 就是为了...//第二个参数一定要是服务器段支持的格式 解码 String decoderString = URLDecoder.decode("%E5%8D%83%E9%9B%85%E7%88%B8%E7%88%B8","UTF-8");
  • String decode = URLDecoder.decode(encode, charset); System.out.println("解码结果: " + decode); } urlEncoder编码数据: 编码测试+-./&=a=1*%123 编码结果: %E7%BC%96%E7%A0%81%E6%B5%8B%E8%AF%95%2B-.%2F%26%3...
  • 然后服务端获取时: String param = URLDecoder.decode(param, "utf-8"); 这样才能获取到正确的值。 注意: URLEncoder 必须 仅仅 编码 参数 或者参数的值,不能编码整个 url,也不能一起对 param=value 进行编码...
  • JAVA URLDecoder.decode()解码"+"变空格 java解决一个bug 后端对字符串解码的时候+ 变成空格 导致无法正确匹配 网上看了很多 都没有解决我的问题 可能是我情况特殊 解决问题后得到以下两种解决办法 1 前端传过来+ ...

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