Java 如何使用struts 2标记格式化JSP中请求属性中存储的值（数字）_Java_Jsp_Struts2

Java 如何使用struts 2标记格式化JSP中请求属性中存储的值（数字）

java jsp struts2

Java 如何使用struts 2标记格式化JSP中请求属性中存储的值（数字）,java,jsp,struts2,Java,Jsp,Struts2,以下是我的数字格式代码： 1） struts.xml <struts> <constant name="struts.custom.i18n.resources" value="cvformat" /> <package name="basicstruts2" extends="struts-default"> <action name="format" class="com.sample.te

以下是我的数字格式代码：

1） struts.xml

<struts>

        <constant name="struts.custom.i18n.resources" value="cvformat" />

        <package name="basicstruts2" extends="struts-default">
            <action name="format" class="com.sample.test.FormatAction">
                <result name="success">/sample.jsp</result>
            </action>
        </package>
 </struts>

3）形成作用

package com.sample.test;

import javax.servlet.http.HttpServletRequest;

import org.apache.struts2.interceptor.ServletRequestAware;

public class FormatAction implements ServletRequestAware {

    private double amount;

    private HttpServletRequest request;

    public String execute() {

        amount = 18964.8953;
        request.setAttribute("temp", amount);

        return "success";
    }

    public double getAmount() {
        return amount;
    }

    public void setAmount(double amount) {
        this.amount = amount;
    }

    public HttpServletRequest getServletRequest() {
        return request;
    }

    public void setServletRequest(HttpServletRequest request) {
        this.request = request;
    }
}

4） sample.jsp

<%@ taglib uri="/struts-tags" prefix="s"%>
<html>
    <head>
        <title>NUMBER FORMAT EXAMPLE</title>
    </head>
    <body>
        Amount =  <s:property value="amount"></s:property><br/><br/>
        1) Formating amount(with format hard coded)  = <s:property value="getText('{0,number,#,##0.00}',{amount})"/><br/>
        2) Formating amount(with format fetched from properties file)  = <s:property value="getText('number.format',{amount})"/><br/>
        3) Formating amount set in request attribute(with format hard coded) = <s:property value="getText('{0,number,#,##0.00}',#request.temp)"/><br/>
        4) Formating amount set in request attribute(with format fetched from properties file) = <s:property value="getText('number.format',#request.temp)"/><br/>
    </body>

</html>

如上面的输出所示，只有实例变量值使用存储在属性文件中的模式进行格式化。

为什么请求属性中存储的值没有格式化

为什么在使用模式时实例变量值未格式化是否在JSP中硬编码

请告诉我如何格式化JSP中存储在请求属性中的值。

您忘记将

#request.temp

包装在

{}

getText（“{0，number，#，##0.00}，{#request.temp}）”中。

。对我来说效果很好。一种格式比两种格式好，转到struts.custom.i18n.resources。谢谢你的回答。我在{}中包装了#request.temp。案例2和案例4（使用从struts.custom.i18n.resources中选取的模式进行格式化）工作正常，但当模式在jsp中被硬编码时，它就不工作了。无论如何，我将遵循struts.custom.i18n.resources格式。@JavaDeveloper:Woks for me。您正在使用哪个S2版本？我正在使用struts2-core-2.3.24.jar。您忘记将

#request.temp

包装在

{}

getText（'{0，number，#，0.00}，{#request.temp}）

<%@ taglib uri="/struts-tags" prefix="s"%>
<html>
    <head>
        <title>NUMBER FORMAT EXAMPLE</title>
    </head>
    <body>
        Amount =  <s:property value="amount"></s:property><br/><br/>
        1) Formating amount(with format hard coded)  = <s:property value="getText('{0,number,#,##0.00}',{amount})"/><br/>
        2) Formating amount(with format fetched from properties file)  = <s:property value="getText('number.format',{amount})"/><br/>
        3) Formating amount set in request attribute(with format hard coded) = <s:property value="getText('{0,number,#,##0.00}',#request.temp)"/><br/>
        4) Formating amount set in request attribute(with format fetched from properties file) = <s:property value="getText('number.format',#request.temp)"/><br/>
    </body>

</html>

Amount = 18964.8953

1) Formating amount(with format hard coded) = 
2) Formating amount(with format fetched from properties file) = 18,964.90
3) Formating amount set in request attribute(with format hard coded) = 18964.8953
4) Formating amount set in request attribute(with format fetched from properties file) = {0,number,#,##0.00}