Struts2简单实现添加学生

妖狐艹你老母 2022-05-19 09:53 279阅读 0赞

1、新建JavaWeb工程struts2\_addStudent

2、在Web\_Root>WEB-INF>lib下导入struts2的九个基本jar包，

另添加jdbc和datetimepicker日期小插件的struts2-dojo-plugin包，建立path

3、创建学生信息表：stu\_num、stu\_name、stu\_gender、stu\_birthday、stu\_major、stu\_remark

4、在src>com.bean包下新建javaBean，Student.java

package com.bean;
    import java.util.Date;
    
    public class Student {
    	private String stu_num;
    	private String stu_name;
    	private int stu_gender;
    	private String stu_major;
    	private java.sql.Date stu_birthday;
    	private String stu_remarks;
    	public String getStu_num() {
    		return stu_num;
    	}
    	public void setStu_num(String stu_num) {
    		this.stu_num = stu_num;
    	}
    	public String getStu_name() {
    		return stu_name;
    	}
    	public void setStu_name(String stu_name) {
    		this.stu_name = stu_name;
    	}
    	public int getStu_gender() {
    		return stu_gender;
    	}
    	public void setStu_gender(int stu_gender) {
    		this.stu_gender = stu_gender;
    	}
    	public String getStu_major() {
    		return stu_major;
    	}
    	public void setStu_major(String stu_major) {
    		this.stu_major = stu_major;
    	}
    	public java.sql.Date getStu_birthday() {
    		return stu_birthday;
    	}
    	public void setStu_birthday(java.sql.Date stu_birthday) {
    		this.stu_birthday = stu_birthday;
    	}
    	public String getStu_remarks() {
    		return stu_remarks;
    	}
    	public void setStu_remarks(String stu_remarks) {
    		this.stu_remarks = stu_remarks;
    	}
    	@Override
    	public String toString() {
    		return "Student [stu_num=" + stu_num + ", stu_name=" + stu_name + ", stu_gender=" + stu_gender + ", stu_major="
    				+ stu_major + ", stu_birthday=" + stu_birthday + ", stu_remarks=" + stu_remarks + "]";
    	}
    	
    }

5、在src>com.util包下新建数据库操作工具类DBUtil.java

package com.util;
    import java.sql.Connection;
    import java.sql.DriverManager;
    import java.sql.PreparedStatement;
    import java.sql.SQLException;
    import com.bean.Student;
    
    public class DBUtil {
    	static Connection conn=null;
    	static PreparedStatement ps=null;
    	public DBUtil(){
    		try {
    			Class.forName("com.mysql.jdbc.Driver");
    			conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/mydb?useSSL=false","root","root123");
    		} catch (Exception e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}
    	}
    	public boolean addStudent(Student st){
    		try{
    			ps=conn.prepareStatement("insert into students value(?,?,?,?,?,?)");
    			ps.setString(1, st.getStu_num());
    			ps.setString(2, st.getStu_name());
    			ps.setInt(3, st.getStu_gender());
    			ps.setDate(4, st.getStu_birthday());
    			ps.setString(5, st.getStu_major());
    			ps.setString(6, st.getStu_remarks());
    			ps.execute();
    			return true;
    		}catch(SQLException e){
    			e.printStackTrace();
    			return false;
    		}finally{
    			try {
    				ps.close();
    				conn.close();
    			} catch (SQLException e) {
    				// TODO Auto-generated catch block
    				e.printStackTrace();
    			}
    		}
    	}
    }

6、在WEB-INF下新建web.xml配置文件

<?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:web="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
      <filter>
        <filter-name>struts2Filter</filter-name>
        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
      </filter>
      <filter-mapping>
        <filter-name>struts2Filter</filter-name>
        <url-pattern>/*</url-pattern>
      </filter-mapping>
    </web-app>

7、在WebRoot下新建stu.jsp的添加学生页

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
    <%@ taglib prefix="s" uri="/struts-tags" %>
    <%@ taglib prefix="sx" uri="/struts-dojo-tags" %>
    
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
    <html>
      <head>   
        <title>save Student</title>
        <s:head/>
        <sx:head/>    //注意添加这个标签否则没有效果
      </head>
      
      <body>
      <h3>添加学生信息</h3>
        <s:form action="save" method="post">
        	<table>
        		<tr>
        			
        			<td><s:textfield name="student.stu_num" label="学号"/></td>
        		</tr>
        		<tr>
        			
        			<td><s:textfield name="student.stu_name" label="姓名"/></td>
        		</tr>
        		<tr>
        		    
        			<td><s:radio name="student.stu_gender" label="性别" list="#{1:'男',2:'女'}" value="1"/></td>
        		</tr>
        		<tr>
        			<td>出生时间：</td>
        			<td><sx:datetimepicker name="student.stu_birthday" id="birthday" displayFormat="yyyy-MM-dd"/>
        			</td>
        		</tr>
        		<tr>
        			
        			<td><s:textfield name="student.stu_major" label="专业"/></td>
        		</tr>
        		<tr>
        			
        			<td><s:textfield name="student.stu_remarks" label="备注"/></td>
        		</tr>
        		<tr>
        			<td><s:reset value="重置"/></td>
        			<td><s:submit value="提交"/></td>
        		</tr>
        	</table>
        </s:form>
      </body>
    </html>

8、在src>com.action 下添加处理请求的action类，新建AddStudent.java

package com.action;
    
    import com.bean.Student;
    import com.opensymphony.xwork2.ActionSupport;
    import com.util.DBUtil;
    
    public class AddStudent extends ActionSupport{
    	private Student student;
    	public Student getStudent() {
    		return student;
    	}
    	public void setStudent(Student student) {
    		this.student = student;
    	}
    	
    	public String execute()throws Exception{
    		DBUtil db=new DBUtil(); //创建连接对象
    		Student stu=new Student();
    		stu.setStu_num(student.getStu_num());
    		stu.setStu_name(student.getStu_name());
    		stu.setStu_gender(student.getStu_gender());
    		stu.setStu_birthday(student.getStu_birthday());
    		stu.setStu_major(student.getStu_major());
    		stu.setStu_remarks(student.getStu_remarks());
    		if(db.addStudent(stu))
    			return SUCCESS;
    		else
    			return ERROR;
    	}
    }

9、在src下新建struts.xml配置文件，关联stu.jsp和action处理类

<?xml version="1.0" encoding="UTF-8"?>
        <!DOCTYPE struts PUBLIC
            "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"
            "http://struts.apache.org/dtds/struts-2.5.dtd">
        <struts>
            <package name="default" namespace="/" extends="struts-default">
    
    	        <action name="save" class="com.action.AddStudent">
    	            <result name="success">/success.jsp</result>
    	            <result name="error">/error.jsp</result>
    	        </action>
           
            </package>
        </struts>

10、在WebRoot下添加success.jsp和error.jsp

<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
    
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
    <html>
      <head>  
        <title>success add student</title>
      </head>
      
      <body>
        <h3 style="margin:100px auto">
        	Congratulation! You SUCCESS add Student into Database.
        </h3>
      </body>
    </html>

<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
    
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
    <html>
      <head>  
        <title>error</title>
      </head>
      
      <body>
        <h3 style="margin:100px auto">
        	Sorry! You Fail in add Student into Database.
        </h3>
      </body>
    </html>

11、保存启动Tomcat浏览器测试

![70][]

![70 1][]

数组库表

![70 2][]

如果日期控件没有效果，查看是否在<title>的标签后有添加<s:head/>或 <sx:head/>

[70]: /images/20220519/faa6030b9ffa484aa5bffaa36f640f01.png
[70 1]: /images/20220519/a40b1334a954413ca191aaf1626e78f9.png
[70 2]: /images/20220519/948b93fe5f3940bc9ab0b9a3e6d4cdbc.png