把textarea的内容写到数据库中再读出来时不能自动换行和不识别空格,该怎么样处理! 把textarea的内容写到数据库中再读出来时不能自动换行和不识别空格,该怎么样处理! 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 显示的时候,把 \n \r 替换成 "<br />"把 " " 换成 " " asp:<%n="比如这是你读出来的东西" n=replace(n,chr(13),"<br>") n=replace(n," "," ") response.write(n)%> 呵呵,求求各位大侠了,我需要javascript版的 在textarea控件作换行操作了呀 字符串从数据库里读到页面时,通常要经过处理。比如果<input value="aaaa">如果数据库里的值是aa"aa,不处理就直接使用的话,就会产生失真。对于产生失真或的产生错误的特殊字符,都要进行处理。可以在显示时使用<%=CommStr.htmlTextEncoder(yourString)%>/* * Created by Seamus * Updated on 2004-10-21 by JK * */package com.jk.util;public class CommStr{ /** *replace the old string to new string in the given destination string. */ public static java.lang.String strReplace(java.lang.String destStr, java.lang.String oldStr, java.lang.String newStr) { if(destStr==null) return ""; String tmpStr = destStr; int foundPos = tmpStr.indexOf(oldStr); while (foundPos>=0) { tmpStr = tmpStr.substring(0,foundPos) + newStr + tmpStr.substring(foundPos + oldStr.length(),tmpStr.length()); foundPos = tmpStr.indexOf(oldStr,foundPos+newStr.length()); } return tmpStr; } /** *Encode for HTML. */ public static String htmlEncoder(String str) { if(str==null || str.equals("")) return ""; String res_str; res_str=strReplace(str,"<","<"); res_str=strReplace(str,">","&rt;"); res_str=strReplace(str,"\"","""); res_str=strReplace(str,"'","'"); return res_str; } /** *Encode for HTML-Text. */ public static String htmlTextEncoder(String str) { if(str==null || str.equals("")) return ""; String res_str; res_str=strReplace(str,"<","<"); res_str=strReplace(str,">","&rt;"); res_str=strReplace(str,"\"","""); res_str=strReplace(str,"'","'"); res_str=strReplace(str," "," "); res_str=strReplace(str,"\r\n","<br>"); res_str=strReplace(str,"\r","<br>"); res_str=strReplace(str,"\n","<br>"); return res_str; } /** *Encode for URL. */ public static String urlEncoder(String str) { return java.net.URLEncoder.encode(str) ; } /** *Encode for XML. */ public static String xmlEncoder(String str) { if(str==null || str.equals("")) return ""; String res_str; res_str=strReplace(str,"&","&"); res_str=strReplace(res_str,"<","<"); res_str=strReplace(res_str,">",">"); res_str=strReplace(res_str,"\"", """); res_str=strReplace(res_str,"\'", "´"); return res_str; } /** *Encode for SQL. */ public static String sqlEncoder(String str) { if(str==null || str.equals("")) return ""; String res_str; res_str=strReplace(str,"'","''"); return res_str; } /** *Encode for Javascript. */ public static String jsEncoder(String str) { if(str==null || str.equals("")) return ""; String res_str; res_str=strReplace(str,"'","\\'"); res_str=strReplace(str,"\"","\\\""); res_str=strReplace(str,"\r\n","\\\n"); res_str=strReplace(str,"\n","\\\n"); res_str=strReplace(str,"\r","\\\n"); return res_str; }} 这个实现最好是在server端而不是client端。不要想着用javascript实现,不现实。jk, 什么时候在javascript版成猩了?妒嫉啊。 cm4ever(小P):见笑了。:) 我目前在jsp/servlet/javabean论坛混。基于不重造轮子的原则,我决定把你这个类加到我的blog。jsp论坛很多人都问过这个问题。好听的说法是学习高手代码,粗鲁点说就是抢啦!呃,觉得你也应该激活blog :))) 多谢 JK_10000(JK):但我是asp,服务段用的是javascript脚本 跪求!swfupload如何动态传参数呢? 麻烦大家帮忙看下这段代码怎么实现? 请问如何用javascript实现 像手机信号量的那个UI? 请问怎么才能让这段代码实现链接成功? 为什么设置不了DIV中的white-space 【求助】js动态添加行后传值问题 请高手帮助啊 file输入框的问题。。。! 如何自动决定 focus 的 textbox? 请问如何用脚本语言实现网页的刷新?? 在script中如何将一个网页插入到当前网页中? 如何构造正确的url字符串参数? 关于<input:file>的问题,急!
把 " " 换成 " "
<%n="比如这是你读出来的东西"
n=replace(n,chr(13),"<br>")
n=replace(n," "," ")
response.write(n)
%>
比如果<input value="aaaa">如果数据库里的值是aa"aa,不处理就直接使用的话,就会产生失真。
对于产生失真或的产生错误的特殊字符,都要进行处理。可以在显示时使用
<%=CommStr.htmlTextEncoder(yourString)%>/*
* Created by Seamus
* Updated on 2004-10-21 by JK
*
*/
package com.jk.util;public class CommStr
{
/**
*replace the old string to new string in the given destination string.
*/
public static java.lang.String strReplace(java.lang.String destStr, java.lang.String oldStr, java.lang.String newStr)
{
if(destStr==null)
return "";
String tmpStr = destStr;
int foundPos = tmpStr.indexOf(oldStr);
while (foundPos>=0)
{
tmpStr = tmpStr.substring(0,foundPos) + newStr + tmpStr.substring(foundPos + oldStr.length(),tmpStr.length());
foundPos = tmpStr.indexOf(oldStr,foundPos+newStr.length());
}
return tmpStr;
} /**
*Encode for HTML.
*/
public static String htmlEncoder(String str)
{
if(str==null || str.equals(""))
return "";
String res_str;
res_str=strReplace(str,"<","<");
res_str=strReplace(str,">","&rt;");
res_str=strReplace(str,"\"",""");
res_str=strReplace(str,"'","'");
return res_str;
} /**
*Encode for HTML-Text.
*/
public static String htmlTextEncoder(String str)
{
if(str==null || str.equals(""))
return "";
String res_str;
res_str=strReplace(str,"<","<");
res_str=strReplace(str,">","&rt;");
res_str=strReplace(str,"\"",""");
res_str=strReplace(str,"'","'");
res_str=strReplace(str," "," ");
res_str=strReplace(str,"\r\n","<br>");
res_str=strReplace(str,"\r","<br>");
res_str=strReplace(str,"\n","<br>");
return res_str;
} /**
*Encode for URL.
*/
public static String urlEncoder(String str) {
return java.net.URLEncoder.encode(str) ;
} /**
*Encode for XML.
*/
public static String xmlEncoder(String str)
{
if(str==null || str.equals(""))
return "";
String res_str;
res_str=strReplace(str,"&","&");
res_str=strReplace(res_str,"<","<");
res_str=strReplace(res_str,">",">");
res_str=strReplace(res_str,"\"", """);
res_str=strReplace(res_str,"\'", "´");
return res_str;
} /**
*Encode for SQL.
*/
public static String sqlEncoder(String str)
{
if(str==null || str.equals(""))
return "";
String res_str;
res_str=strReplace(str,"'","''");
return res_str;
} /**
*Encode for Javascript.
*/
public static String jsEncoder(String str)
{
if(str==null || str.equals(""))
return "";
String res_str;
res_str=strReplace(str,"'","\\'");
res_str=strReplace(str,"\"","\\\"");
res_str=strReplace(str,"\r\n","\\\n");
res_str=strReplace(str,"\n","\\\n");
res_str=strReplace(str,"\r","\\\n");
return res_str;
}}
见笑了。:)
但我是asp,服务段用的是javascript脚本