将整型数据格式化为指定长度的字符串
2018-08-18 本文已影响0人
神坛下的我
StringUtil7.java
import java.text.NumberFormat;
public class StringUtil7 {
private int intValue;//将要格式化的整型值
private String formatStr;//格式化后的字符串
private int minimumDigit;//字符串的最少位数
public StringUtil7(){}
public int getIntValue() {
return intValue;
}
public void setIntValue(int intValue) {
this.intValue = intValue;
}
public String getFormatStr() {
NumberFormat nf= NumberFormat.getInstance();
nf.setMinimumIntegerDigits(minimumDigit);
return nf.format(intValue).replace(",", "");//把字符串中的，替换掉
}
public void setFormatStr(String formatStr) {
this.formatStr = formatStr;
}
public int getMinimumDigit() {
return minimumDigit;
}
public void setMinimumDigit(int minimumDigit) {
this.minimumDigit = minimumDigit;
}
}
index.jsp
<body>
<form action="result.jsp" method="post">
<table>
<tr>
<td align="right">请输入要格式化的数字：</td>
<td><input type="text" name="num"/></td>
</tr>
<tr>
<td align="right">请输入格式化后的字符串长度：</td>
<td><input type="text" name="length"/></td>
</tr>
<tr>
<td colspan="2" align="center"><input type="submit" value="格式化"/></td>
</tr>
</table>
</form>
</body>
result.jsp
<body>
<%
request.setCharacterEncoding("utf-8");
String num=request.getParameter("num");
String length=request.getParameter("length");
int n=Integer.parseInt(num);
int l=Integer.parseInt(length);
%>
<jsp:useBean id="strBean" class="com.count.StringUtil7"></jsp:useBean>
<jsp:setProperty property="intValue" name="strBean" value="<%=n %>"/>
<jsp:setProperty property="minimumDigit" name="strBean" value="<%=l %>"/>
<table>
<tr>
<td>格式化之前的数字：</td>
<td align="left">
<jsp:getProperty property="intValue" name="strBean"/>
</td>
</tr>
<tr>
<td>格式化之后的字符串：</td>
<td align="left">
<jsp:getProperty property="formatStr" name="strBean"/>
</td>
</tr>
</table>
</body>
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