过滤字符串中的Null和空格
2018-08-18 本文已影响0人
神坛下的我
StringUtil.java
public class StringUtil7 {
private String sourceStr;//源字符串
private String targetStr;//替换后的字符串
public String getSourceStr() {
return sourceStr;
}
public void setSourceStr(String sourceStr) {
this.sourceStr = sourceStr;
}
public String getTargetStr() {
if(sourceStr==null){
sourceStr="";
}
sourceStr=sourceStr.replaceAll(" ", "");
targetStr=sourceStr;
return targetStr;
}
public void setTargetStr(String targetStr) {
this.targetStr = targetStr;
}
}
index.jsp
<body>
<form action="result.jsp" method="post">
<table>
<tr>
<td align="right">请输入字符串：</td>
<td><input type="text" name="sourceStr" size="40"/></td>
</tr>
<tr>
<td colspan="2" align="center"><input type="submit" value="过滤"/></td>
</tr>
</table>
</form>
</body>
result.jsp
<body>
<%
request.setCharacterEncoding("utf-8");
String sourceStr= request.getParameter("sourceStr");
%>
<jsp:useBean id="strBean" class="com.count.StringUtil7"></jsp:useBean>
<jsp:setProperty property="sourceStr" name="strBean" value="<%=sourceStr %>"/>
<table>
<tr>
<td>过滤之前的字符串：</td>
<td align="left">
<jsp:getProperty property="sourceStr" name="strBean"/>
</td>
</tr>
<tr>
<td>过滤之后的字符串：</td>
<td align="left">
<jsp:getProperty property="targetStr" name="strBean"/>
</td>
</tr>
</table>
</body>
21.PNG
