jsp 地址传参中文乱码解决办法

拼搏现实的明天。 2022-05-18 03:16 311阅读 0赞

一、在请求页面的请求参数需要用encodeURI进行转码,然后在接收请求的页面需要进行字符集转换。

本例中的请求和接收页面的字符集都是UTF-8:

1.请求的JSP页面用JavaScript的encodeURI()方法将参数转码:

function toView(param)\{

var encodeparam = encodeURI(param) ;

window.location.href="/naias/advAna\_form.do?method=showDetail&title="+encodeparam ;

2.在跳转的Action中进行字符集转换:

public ActionForward excute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response)\{

String title= request.getParameter("title");   
    title= new String( title.getBytes("iso-8859-1"), "UTF-8");

System.out.println(title);

二、为编码为UTF-8的JSP页面传参，对于中文乱码的解决分为两种情况：

1.通过GET方式传参，通过new String(request.getParameter("").getBytes("ISO-8859-1"),"UTF-8"); 的方式转换为需要的编码，如UTF-8等。

2.通过POST方式传参，通过声明request.setCharacterEncoding("UTF-8");的方式声明编码类型来解决。

三、可以通过加过滤器，解决乱码 ，但是对GET方式提交的参数(也就是通过地址栏穿的参数)不起作用。

四、如果用tomcat服务器，可以更tomcat的配置文件将字符集编码设置为UTF-8即可。

以上方法都不行的话，提供如下绝对行的方法：

直接给代码吧，把如下代码copy到Escape.java文件中

1.  `package com.ctgusec.oaPlus;`
2.  `/**`
3.  `* 将url中文参数编码或者反编码`
4.  `* javascript escape/unescape 编码的 Java 实现`
5.  `* author agile`
6.  `* 使用方法：`
7.  `* Escape.unescape(vaule);//导入这个java文件，调用unescape方法，参数为js提交过来的16进制字符串`
8.  `* js页面提交url方法：`
9.  `* escape() 是JavaScript函数，对字符串转码，解决中文参数问题`
10. `* URL:servlet?属性="+escape(escape(str) ;//参数str是需要提交的中文字符`
11. `*`
12. `*/`
13. `public class Escape{`
14. `private final static String[] hex = {`
15. `"00","01","02","03","04","05","06","07","08","09","0A","0B","0C","0D","0E","0F",`
16. `"10","11","12","13","14","15","16","17","18","19","1A","1B","1C","1D","1E","1F",`
17. `"20","21","22","23","24","25","26","27","28","29","2A","2B","2C","2D","2E","2F",`
18. `"30","31","32","33","34","35","36","37","38","39","3A","3B","3C","3D","3E","3F",`
19. `"40","41","42","43","44","45","46","47","48","49","4A","4B","4C","4D","4E","4F",`
20. `"50","51","52","53","54","55","56","57","58","59","5A","5B","5C","5D","5E","5F",`
21. `"60","61","62","63","64","65","66","67","68","69","6A","6B","6C","6D","6E","6F",`
22. `"70","71","72","73","74","75","76","77","78","79","7A","7B","7C","7D","7E","7F",`
23. `"80","81","82","83","84","85","86","87","88","89","8A","8B","8C","8D","8E","8F",`
24. `"90","91","92","93","94","95","96","97","98","99","9A","9B","9C","9D","9E","9F",`
25. `"A0","A1","A2","A3","A4","A5","A6","A7","A8","A9","AA","AB","AC","AD","AE","AF",`
26. `"B0","B1","B2","B3","B4","B5","B6","B7","B8","B9","BA","BB","BC","BD","BE","BF",`
27. `"C0","C1","C2","C3","C4","C5","C6","C7","C8","C9","CA","CB","CC","CD","CE","CF",`
28. `"D0","D1","D2","D3","D4","D5","D6","D7","D8","D9","DA","DB","DC","DD","DE","DF",`
29. `"E0","E1","E2","E3","E4","E5","E6","E7","E8","E9","EA","EB","EC","ED","EE","EF",`
30. `"F0","F1","F2","F3","F4","F5","F6","F7","F8","F9","FA","FB","FC","FD","FE","FF"`
31. `};`
32. `private final static byte[] val = {`
33. `0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,`
34. `0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,`
35. `0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,`
36. `0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,`
37. `0x3F,0x0A,0x0B,0x0C,0x0D,0x0E,0x0F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,`
38. `0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,`
39. `0x3F,0x0A,0x0B,0x0C,0x0D,0x0E,0x0F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,`
40. `0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,`
41. `0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,`
42. `0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,`
43. `0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,`
44. `0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,`
45. `0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,`
46. `0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,`
47. `0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,`
48. `0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F`
49. `};`
50. `public static String escape(String s) {`
51. `StringBuffer sbuf = new StringBuffer();`
52. `int len = s.length();`
53. `for (int i = 0; i < len; i++) {`
54. `int ch = s.charAt(i);`
55. `if (ch == ' ') { // space : map to '+'`
56. `sbuf.append('+');`
57. `} else if ('A' <= ch && ch <= 'Z') { // 'A'..'Z' : as it was`
58. `sbuf.append((char)ch);`
59. `} else if ('a' <= ch && ch <= 'z') { // 'a'..'z' : as it was`
60. `sbuf.append((char)ch);`
61. `} else if ('0' <= ch && ch <= '9') { // '0'..'9' : as it was`
62. `sbuf.append((char)ch);`
63. `} else if (ch == '-' || ch == '_' // unreserved : as it was`
64. `|| ch == '.' || ch == '!'`
65. `|| ch == '~' || ch == '*'`
66. `|| ch == '\'' || ch == '('`
67. `|| ch == ')') {`
68. `sbuf.append((char)ch);`
69. `} else if (ch <= 0x007F) { // other ASCII : map to %XX`
70. `sbuf.append('%');`
71. `sbuf.append(hex[ch]);`
72. `} else { // unicode : map to %uXXXX`
73. `sbuf.append('%');`
74. `sbuf.append('u');`
75. `sbuf.append(hex[(ch >>> 8)]);`
76. `sbuf.append(hex[(0x00FF & ch)]);`
77. `}`
78. `}`
79. `return sbuf.toString();`
80. `}`
81. `public static String unescape(String s) {`
82. `StringBuffer sbuf = new StringBuffer();`
83. `int i = 0;`
84. `int len = s.length();`
85. `while (i < len) {`
86. `int ch = s.charAt(i);`
87. `if (ch == '+') { // + : map to ' '`
88. `sbuf.append(' ');`
89. `} else if ('A' <= ch && ch <= 'Z') { // 'A'..'Z' : as it was`
90. `sbuf.append((char)ch);`
91. `} else if ('a' <= ch && ch <= 'z') { // 'a'..'z' : as it was`
92. `sbuf.append((char)ch);`
93. `} else if ('0' <= ch && ch <= '9') { // '0'..'9' : as it was`
94. `sbuf.append((char)ch);`
95. `} else if (ch == '-' || ch == '_' // unreserved : as it was`
96. `|| ch == '.' || ch == '!'`
97. `|| ch == '~' || ch == '*'`
98. `|| ch == '\'' || ch == '('`
99. `|| ch == ')') {`
100. `sbuf.append((char)ch);`
101. `} else if (ch == '%') {`
102. `int cint = 0;`
103. `if ('u' != s.charAt(i+1)) { // %XX : map to ascii(XX)`
104. `cint = (cint << 4) | val[s.charAt(i+1)];`
105. `cint = (cint << 4) | val[s.charAt(i+2)];`
106. `i+=2;`
107. `} else { // %uXXXX : map to unicode(XXXX)`
108. `cint = (cint << 4) | val[s.charAt(i+2)];`
109. `cint = (cint << 4) | val[s.charAt(i+3)];`
110. `cint = (cint << 4) | val[s.charAt(i+4)];`
111. `cint = (cint << 4) | val[s.charAt(i+5)];`
112. `i+=5;`
113. `}`
114. `sbuf.append((char)cint);`
115. `}`
116. `i++;`
117. `}`
118. `return sbuf.toString();`
119. `}`
120. `/*public static void main(String[] args) {`
121. `String stest = "中文1234 abcd[]()<+>,.~\\";`
122. `System.out.println(stest);`
123. `System.out.println(escape(stest));`
124. `System.out.println(unescape(escape(stest)));`
125. `} */`
126. `}`
127.

以上代码做的工作是把通过js获取的字符串转换成16进制的字符串放到url的参数上，传到服务器端再把这个16进制字符串转换为原来的字符串。

方法有点笨，但是效果绝对有。。。。如有更好方法，欢迎交流。

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