Hướng dẫn sử dụng Java JSP Standard Tag Library (JSTL)

<!-- taglibs-standard-spec-*.jar -->
<!-- http://mvnrepository.com/artifact/org.apache.taglibs/taglibs-standard-spec -->
<dependency>
    <groupId>org.apache.taglibs</groupId>
    <artifactId>taglibs-standard-spec</artifactId>
    <version>1.2.5</version>
</dependency>

<!-- taglibs-standard-impl-*.jar -->
<!-- http://mvnrepository.com/artifact/org.apache.taglibs/taglibs-standard-impl -->
<dependency>
    <groupId>org.apache.taglibs</groupId>
    <artifactId>taglibs-standard-impl</artifactId>
    <version>1.2.5</version>
</dependency>

<!-- http://mvnrepository.com/artifact/org.glassfish.web/javax.servlet.jsp.jstl -->
<dependency>
   <groupId>org.glassfish.web</groupId>
   <artifactId>javax.servlet.jsp.jstl</artifactId>
   <version>1.2.4</version>
</dependency>

<!-- http://mvnrepository.com/artifact/javax.servlet.jsp.jstl/javax.servlet.jsp.jstl-api -->
<dependency>
   <groupId>javax.servlet.jsp.jstl</groupId>
   <artifactId>javax.servlet.jsp.jstl-api</artifactId>
   <version>1.2.1</version>
</dependency>

<!-- standard.jar -->
<!-- http://mvnrepository.com/artifact/taglibs/standard -->
<dependency>
   <groupId>taglibs</groupId>
   <artifactId>standard</artifactId>
   <version>1.1.2</version>
</dependency>

<!-- jstl-*.jar -->
<!-- http://mvnrepository.com/artifact/javax.servlet/jstl -->
<dependency>
   <groupId>javax.servlet</groupId>
   <artifactId>jstl</artifactId>
   <version>1.2</version>
</dependency>

package org.o7planning.jslttutorial.beans;

import java.util.HashSet;
import java.util.Set;

public class Dept {

  private int deptNo;
  private String deptName;
  private String location;

  private Set<Emp> employees;

  public Dept() {

  }

  public Dept(int deptNo, String deptName, String location) {
      this.deptNo = deptNo;
      this.deptName = deptName;
      this.location = location;
  }

  public int getDeptNo() {
      return deptNo;
  }

  public void setDeptNo(int deptNo) {
      this.deptNo = deptNo;
  }

  public String getDeptName() {
      return deptName;
  }

  public void setDeptName(String deptName) {
      this.deptName = deptName;
  }

  public String getLocation() {
      return location;
  }

  public void setLocation(String location) {
      this.location = location;
  }

  public Set<Emp> getEmployees() {
      return employees;
  }

  public void setEmployees(Set<Emp> employees) {
      this.employees = employees;
  }
 
  public void addEmployee(Emp employee)  {
      if(this.employees== null)  {
          this.employees= new HashSet<Emp>();
      }
      this.employees.add(employee);
  }
}

package org.o7planning.jslttutorial.beans;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class Emp {

    private int empNo;
    private String empName;
    private String job;

    private Date hireDate;
    private float salary;

    private static final DateFormat df = new SimpleDateFormat("MM/dd/yyyy");

    public Emp() {

    }

    // @hireDateStr - phải có định dạng 'MM/dd/yyyy'.
    public Emp(int empNo, String empName, String job,
            String hireDateStr, float salary)  {
        this.empNo = empNo;
        this.empName = empName;
        this.job = job;
        this.salary = salary;
        try {
            this.hireDate = df.parse(hireDateStr);
        } catch (ParseException e) {
            throw new RuntimeException(e);
        }
    }

    public int getEmpNo() {
        return empNo;
    }

    public void setEmpNo(int empNo) {
        this.empNo = empNo;
    }

    public String getEmpName() {
        return empName;
    }

    public void setEmpName(String empName) {
        this.empName = empName;
    }

    public String getJob() {
        return job;
    }

    public void setJob(String job) {
        this.job = job;
    }

    public Date getHireDate() {
        return hireDate;
    }

    public void setHireDate(Date hireDate) {
        this.hireDate = hireDate;
    }

    public float getSalary() {
        return salary;
    }

    public void setSalary(float salary) {
        this.salary = salary;
    }

}

package org.o7planning.jslttutorial.utils;

import java.util.ArrayList;
import java.util.List;
import java.util.Set;

import org.o7planning.jslttutorial.beans.Dept;
import org.o7planning.jslttutorial.beans.Emp;

public class DBUtils {

	private static final List<Dept> DEPARTMENTS = new ArrayList<Dept>();

	static {
		initData();
	}

	// Mô phỏng dữ liệu trong Database.
	private static void initData() {

		Dept accountingDept = new Dept(10, "ACCOUNTING", "NEW YORK");
		accountingDept.addEmployee(new Emp(7782, "CLARK", "MANAGER", "6/9/1981", 2450.00f));
		accountingDept.addEmployee(new Emp(7839, "KING", "PRESIDENT", "11/17/1981", 5000.00f));
		accountingDept.addEmployee(new Emp(7934, "MILLER", "CLERK", "6/9/1981", 1300.00f));

		// 
		Dept reseachDept = new Dept(20, "RESEARCH", "DALLAS");
		reseachDept.addEmployee(new Emp(7369, "SMITH", "CLERK", "12/17/1980", 800.00f));
		reseachDept.addEmployee(new Emp(7788, "SCOTT", "ANALYST", "4/19/1987", 3000.00f));
		reseachDept.addEmployee(new Emp(7876, "ADAMS", "CLERK", "5/23/1987", 1100.00f));
		reseachDept.addEmployee(new Emp(7876, "FORD", "ANALYST", "12/3/1981", 3000.00f));
		reseachDept.addEmployee(new Emp(7566, "JONES", "MANAGER", "4/2/1981", 2975.00f));
		// 
		// 
		Dept salesDept = new Dept(30, "SALES", "CHICAGO");
		salesDept.addEmployee(new Emp(7654, "MARTIN", "SALESMAN", "9/28/1981", 1250.00f));
		salesDept.addEmployee(new Emp(7499, "ALLEN", "SALESMAN", "2/20/1981", 1600.00f));
		salesDept.addEmployee(new Emp(7521, "WARD", "SALESMAN", "2/22/1981", 1250.00f));
		salesDept.addEmployee(new Emp(7844, "TURNER", "SALESMAN", "9/8/1981", 1500.00f));
		salesDept.addEmployee(new Emp(7900, "JAMES", "CLERK", "12/3/1981", 950.00f));
		// 
		Dept openrationsDept = new Dept(40, "OPERATIONS", "BOSTON");
		// 
		DEPARTMENTS.add(accountingDept);
		DEPARTMENTS.add(reseachDept);
		DEPARTMENTS.add(salesDept);
		DEPARTMENTS.add(openrationsDept);
	}

	// Truy vấn bảng Department.
	public static List<Dept> queryDepartments() {
		return DEPARTMENTS;
	}

	// Truy vấn bảng Employee.
	// Lấy ra danh sách các nhân viên của 1 phòng ban.
	public static Set<Emp> queryEmployees(int deptNo) {
		for (Dept dept : DEPARTMENTS) {
			if (deptNo == dept.getDeptNo()) {
				return dept.getEmployees();
			}
		}
		return null;
	}
}

// Lấy ra dữ liệu từ DB (Mô phỏng).
List<Dept> list = DBUtils.queryDepartments();

// Ghi dữ liệu vào thuộc tính 'departments' của request.
request.setAttribute("departments", list);

<c:forEach items="${requestScope.departments}" var="dept">

  ${dept.deptName}

</c:forEach>


<!-- Hoặc (Bạn có thể không cần requestScope)  -->

<c:forEach items="${departments}" var="dept">

  ${dept.deptName}

</c:forEach>

package org.o7planning.jslttutorial.servlets;

import java.io.IOException;
import java.util.List;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.o7planning.jslttutorial.beans.Dept;
import org.o7planning.jslttutorial.utils.DBUtils;

@WebServlet("/jstlCoreExample01")
public class JstlCoreEx01Servlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

	public JstlCoreEx01Servlet() {
		super();
	}

	@Override
	protected void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		// Truy vấn dữ liệu từ DB (Mô phỏng).
		List<Dept> list = DBUtils.queryDepartments();

		// Lưu dữ liệu vào thuộc tính 'departments' của request.
		request.setAttribute("departments", list);

		// Tạo đối tượng RequestDispatcher
		// để Forward (chuyển tiếp) yêu cầu tới jstl_core_example01.jsp
		RequestDispatcher dispatcher = getServletContext()
				.getRequestDispatcher("/WEB-INF/jsps/jstl_core_example01.jsp");

		// Forward (Chuyển tiếp) yêu cầu, để hiển thị dữ liệu trên trang JSP.
		dispatcher.forward(request, response);
	}

	@Override
	protected void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doGet(request, response);
	}

}

<%@ page language="java" contentType="text/html; charset=UTF-8"
  pageEncoding="UTF-8"%>

<!-- Khai báo sử dụng JSTL Core Tags -->
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
 
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>JSTL Core Tags Example 01</title>
</head>
<body>

<h2>Departments and Employees</h2>

<!-- Dùng for để duyệt trên các phòng ban (departments) -->
<c:forEach items="${departments}" var="dept">
 <h3>${dept.deptName}</h3>
 <ul>
   <!-- Dùng for để duyệt trên các nhân viên
               thuộc phòng ban hiện tại -->
   <c:forEach items="${dept.employees}" var="emp">
       <li>
          ${emp.empName} - (${emp.job})
       </li>    
   </c:forEach>
 </ul>

</c:forEach>


</body>
</html>

package org.o7planning.jslttutorial.servlets;

import java.io.IOException;
import java.util.List;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.o7planning.jslttutorial.beans.Dept;
import org.o7planning.jslttutorial.utils.DBUtils;

@WebServlet("/jstlCoreExample02")
public class JstlCoreEx02Servlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

	public JstlCoreEx02Servlet() {
		super();
	}

	@Override
	protected void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		// Chuẩn bị dữ liệu từ DB (Mô phỏng).
		List<Dept> list = DBUtils.queryDepartments();

		// Lưu dữ liệu vào thuộc tính (attribute) 'departments' của request.
		request.setAttribute("departments", list);

		// Tạo đối tượng RequestDispatcher
		// để forward (chuyển tiếp) yêu cầu tới jstl_core_example02.jsp
		RequestDispatcher dispatcher = getServletContext()
				.getRequestDispatcher("/WEB-INF/jsps/jstl_core_example02.jsp");

		// Forward (Chuyển tiếp) yêu cầu, để hiển thị trên trang JSP.
		dispatcher.forward(request, response);
	}

	@Override
	protected void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doGet(request, response);
	}

}

<%@ page language="java" contentType="text/html; charset=UTF-8"
  pageEncoding="UTF-8"%>

<!-- Khai báo sử dụng JSTL Core Tags -->
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
 
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>JSTL Core Tags Example 01</title>
</head>
<body>

<h2>Departments and Employees</h2>

<!-- Dùng for để duyệt trên các phòng ban (departments) -->
<c:forEach items="${departments}" var="dept">

<!-- Kiểm tra một tập hợp có phần tử không -->
<c:if test="${not empty dept.employees}">
     <h3>${dept.deptName}</h3>
     <ul>
       <!-- Dùng for để duyệt trên các nhân viên
                   thuộc phòng ban hiện tại -->
       <c:forEach items="${dept.employees}" var="emp">
           <li>
              ${emp.empName} - (${emp.job})
           </li>    
       </c:forEach>
     </ul>
 </c:if>

</c:forEach>


</body>
</html>

<c:choose>
    <c:when test="${điều kiên 1}">
       <%-- Làm gì đó ở đây khi điều kiện 1 đúng  --%>
    </c:when>
    <c:when test="${điều kiên 2}">
        <%-- Làm gì đó ở đây khi điều kiện 2 đúng  --%>
    </c:when>
    <c:otherwise>
        <%-- Câu lệnh sẽ được thực thi khi tất cả các điều kiện tại <c:when> ở trên sai.  --%>
    </c:otherwise>
</c:choose>

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
 
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>c:choose,c:when,c:otherwise example</title>
</head>
<body>

<h2>c:choose,c:when,c:otherwise example</h2>


<c:choose>
  <%-- Khi tham số color == 'red' --%>
  <c:when test="${param.color=='red'}">
      <p style="color:red;">RED COLOR</p>
  </c:when>  
 
  <%-- Khi tham số color == 'blue' --%>
  <c:when test="${param.color=='blue'}">
      <p style="color:blue;">BLUE COLOR</p>
  </c:when>  
 
  <%-- Các trường hợp khác --%>
  <c:otherwise>
      <b>Other color</b>
  </c:otherwise>
</c:choose>

</body>
</html>

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
   
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>c:out example</title>
</head>
<body>

<h2>c:out example</h2>

<c:out value="${'This is true: 10 > 1 '}" />

<br/>
Tag: <c:out value="${'<atag> , &'}"/>

</body>
</html>

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
   
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>c:set example</title>
</head>
<body>

<h2>c:set example</h2>

<c:set scope="request" var="greeting" value="Hello every body" />


Greeting: <c:out value="${greeting}"/>

</body>
</html>

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
   
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>c:remove example</title>
</head>
<body>

<h2>c:remove example</h2>

<c:set scope="request" var="greeting" value="Hello every body" />


Greeting: <c:out value="${greeting}"/>
<br/><br/>

<c:remove scope="request" var="greeting" />
After remove:
<br/>
Greeting: <c:out value="${greeting}"/>

</body>
</html>

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
 
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>c:catch example</title>
</head>
<body>

<h2>c:catch example</h2>

<c:catch var ="ex">
  <%
   int a = 100/0;    
  %>
</c:catch>

<c:if test = "${ex != null}">
 Exception : ${ex}
 <br />
 Message: ${ex.message}
</c:if>

</body>
</html>

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
   
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>c:forTokens example</title>
</head>
<body>

<h2>c:forTokens example</h2>


<c:forTokens items="Tom,Jerry,Donald" delims="," var="name">
  <c:out value="${name}"/><p>
</c:forTokens>

</body>
</html>

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
   
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>c:url,c:param example</title>
</head>
<body>

<h2>c:url,c:param example</h2>


<c:url value="http://example.com/showPage.jsp" var="myURL">
  <c:param name="color" value="red"/>
  <c:param name="background" value="blue"/>
</c:url>

<c:out value="${myURL}"/>

</body>
</html>

<fmt:formatNumber
  value="<number>"
  type="<string>"
  pattern="<string>"
  currencyCode="<string>"
  currencySymbol="<string>"
  groupingUsed="<string>"
  maxIntegerDigits="<integer>"
  minIntegerDigits="<integer>"
  maxFractionDigits="<integer>"
  minFractionDigits="<integer>"
  var="<string>"
  scope="<string>"/>

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>  
<!DOCTYPE html>
<html>
  <head>
     <meta charset="UTF-8">
     <title>fmt:formatNumber example</title>
  </head>
  <body>
     <h2>fmt:formatNumber example</h2>
     <c:set var="accountBalance" value="12345.6789" />
     <h3>accountBalance=<c:out value="${accountBalance}"/></h3>
     
     The Account Balance can be displayed using various ways:
     
     <p>
        formatNumber (type='currency'):
        <strong>
           <fmt:formatNumber value="${accountBalance}" type="currency"/>
        </strong>
     </p>
     <p>
        formatNumber (type='number', maxIntegerDigits= '3'):
        <strong>
           <fmt:formatNumber type="number" maxIntegerDigits="3" value="${accountBalance}" />
        </strong>
     </p>
     <p>
        formatNumber (type='number', maxFractionDigits= '3'):
        <strong>
           <fmt:formatNumber type="number" maxFractionDigits="3" value="${accountBalance}" />
        </strong>
     </p>
     <p>
        formatNumber (type='number', groupingUsed= 'false'):
        <strong>
           <fmt:formatNumber type="number" groupingUsed="false" value="${accountBalance}" />
        </strong>
     </p>
     <p>
        formatNumber (type='percent', maxIntegerDigits= '3'):
        <strong>
           <fmt:formatNumber type="percent" maxIntegerDigits="3" value="${accountBalance}" />
        </strong>
     </p>
     <p>
        formatNumber (type='percent', maxIntegerDigits= '10'):
        <strong>
           <fmt:formatNumber type="percent" minFractionDigits="10" value="${accountBalance}" />
        </strong>
     </p>
     <p>
        formatNumber (type='number', pattern= '###.###E0'):
        <strong>
           <fmt:formatNumber type="number" pattern="###.###E0" value="${accountBalance}" />
        </strong>
     </p>
     <p>        
        Account Balance in USA (fmt:setLocale value='en_US'):
        <br/>
        formatNumber (type='currency'):          
        <fmt:setLocale value="en_US"/>
        <strong>
           <fmt:formatNumber value="${accountBalance}" type="currency"/>
        </strong>
     <p>
        Account Balance in Canada (fmt:setLocale value='fr_CA'):
        <br/>
        formatNumber (type='currency'):
        <fmt:setLocale value="fr_CA"/>
        <strong>
           <fmt:formatNumber value="${accountBalance}" type="currency"/>
        </strong>
  </body>
 
</html>

<fmt:parseNumber
   value="<string>"
   type="<string>"
   pattern="<string>"
   parseLocale="<string>"
   integerOnly="<string>"
   var="<string>"
   scope="<string>"/>

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>  
<!DOCTYPE html>
<html>
  <head>
     <meta charset="UTF-8">
     <title>fmt:parseNumber example</title>
  </head>
  <body>
     <h2>fmt:parseNumber example</h2>    
 
   <!-- Một chuỗi có định dạng tiền tệ -->
   <c:set var="accountBalance" value="$12345.6789" />
   
    <h4>Input <c:out value="${accountBalance}"/></h4>   
   
   <fmt:parseNumber var="parsedNumber" type="currency"
                  parseLocale="en_US"
                  value="${accountBalance}" />
   
   <p>Account Balance: <c:out value="${parsedNumber}" /></p>
   

   <!-- integerOnly="true" : Chỉ lấy phần nguyên -->
   
   <fmt:parseNumber var="parsedNumber" type="currency"
                   integerOnly="true" parseLocale="en_US"
                   value="${accountBalance}" />
                   
   <p>Account Balance (without cents): <c:out value="${parsedNumber}" /></p>
  </body>
 
</html>

<%@ page language="java" contentType="text/html; charset=UTF-8"
   pageEncoding="UTF-8"%>

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>  
<!DOCTYPE html>
<html>
  <head>
     <meta charset="UTF-8">
     <title>fmt:formatDate example</title>
  </head>
  <body>
     <h2>fmt:formatDate example</h2>
     <c:set var="now" value="<%=new java.util.Date()%>" />
     <p>
        Time (fmt:formatDate type="time"):
        <strong>
           <fmt:formatDate type="time" value="${now}" />
        </strong>
     </p>
     <p>
        Date (fmt:formatDate type="date"):
        <strong>
           <fmt:formatDate type="date" value="${now}" />
        </strong>
     </p>
     <p>
        Date, Time (fmt:formatDate type="both"):
        <strong>
           <fmt:formatDate type="both" value="${now}" />
        </strong>
     </p>
     <p>
        Date, Time Short (fmt:formatDate type="both" dateStyle="short"):
        <strong>
           <fmt:formatDate type="both" dateStyle="short" timeStyle="short" value="${now}" />
        </strong>
     </p>
     <p>
        Date, Time Medium (fmt:formatDate type="both" dateStyle="medium" timeStyle="medium"):
        <strong>
           <fmt:formatDate type="both" dateStyle="medium" timeStyle="medium" value="${now}" />
        </strong>
     </p>
     <p>
        Date, Time Long (fmt:formatDate type="both" dateStyle="long" timeStyle="long"):
        <strong>
           <fmt:formatDate type="both" dateStyle="long" timeStyle="long" value="${now}" />
        </strong>
     </p>
     <p>
        Date, Time (dd-MM-yyyy HH:mm:ss):
        <strong>
           <fmt:formatDate pattern="dd-MM-yyyy HH:mm:ss" value="${now}" />
        </strong>
     </p>
     
     <!-- Store in variable -->
     <fmt:formatDate pattern="dd-MM-yyyy HH:mm" value="${now}" var="nowString"/>
     
      <p>
        Now String (dd-MM-yyyy HH:mm):
        <strong>
           <c:out value="${nowString}" />
        </strong>
      </p>    
  </body>
</html>

<fmt:parseDate
   value="<string>"
   type="<string>"
   dateStyle="<string>"
   timeStyle="<string>"
   pattern="<string>"
   timeZone="<string>"
   parseLocale="<string>"
   var="<string>"
   scope="<string>"/>

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>   
<!DOCTYPE html>
<html>
   <head>
      <meta charset="UTF-8">
      <title>fmt:parseDate example</title>
   </head>
   <body>
      <h2>fmt:parseDate example</h2>
   
      <!-- Một chuỗi có định dạng ngày tháng thời gian -->
      <c:set var="dateTimeString" value="17-11-2015 11:49" />
      <h4>
         dateTimeString:
         <c:out value="${dateTimeString}"/>
      </h4>
      <!-- Phân tích chuỗi mô tả ngày tháng thời gian lưu vào biến kiểu java.util.Date -->
    
      <fmt:parseDate value="${dateTimeString}"
         type="both" var="parsedDatetime" pattern="dd-MM-yyyy HH:mm" />
      <p>
         The date time after parsing:
         <c:out value="${parsedDatetime}" />
      </p>
      <br/>
      <p>
         Date only (dd/MM/yyyy):
         <fmt:formatDate value="${parsedDatetime}" pattern="dd/MM/yyyy"/>
   </body>

</html>

<fmt:bundle baseName="<string>" prefix="<string>"/>

login.label.userName=User Name
login.label.password=Password

login.label.userName=Tên \u0111\u0103ng nh\u1EADp
login.label.password=M\u1EADt kh\u1EA9u

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>  
<c:if test="${not empty param.language}">
  <c:set var="language" value="${param.language}" scope="session"/>
</c:if>
<fmt:setLocale value="${language}" />
<fmt:setBundle basename="org.o7planning.bundles.MyBundle" />
<!DOCTYPE html>
<html>
  <head>
     <meta charset="UTF-8">
     <title>fmt:bundle example</title>
  </head>
  <body>
     <h2>fmt:bundle example</h2>
     <form action="">
        <table border="0">
           <tr>
              <td>
                 <fmt:message key="login.label.userName"/>
              </td>
              <td>
                 <input type="text" name="userName" />
              </td>
           </tr>
           <tr>
              <td>
                 <fmt:message key="login.label.password"/>
              </td>
              <td><input type="text" name="userName" /></td>
           </tr>
        </table>
        <input type="submit"  value="Submit"/>
     </form>
  </body>
</html>

<fmt:message
   key="<string>"
   bundle="<string>"
   var="<string>"
   scope="<string>"/>