休眠沒有采取通過html/jsp字段輸入值

你好，我試圖插入一些數據使用休眠到MySQL數據庫。休眠沒有采取通過html/jsp字段輸入值

的index.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1" 
pageEncoding="ISO-8859-1"%> 
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 
<html> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> 
<title>Register a Device</title> 
</head> 
<body> 
<form action="register.jsp" method="post"> 
Make:<input type="text" name="make"/><br><br/> 
Model:<input type="text" name="model"/><br><br/> 
Release Date:<input type="text" name="relDate"/><br><br/> 
Rating:<input type="text" name="rating"/><br><br/> 
Price:<input type="text" name="price"/><br><br/> 
<input type="submit" value="Register"/> 
</form> 
</body> 
</html>

模型類

@Entity 
@Table(name = "PHONES") 
public class Phone { 

@Id @GeneratedValue 
@Column(name = "ID") 
private int id; 
@Column(name = "MAKE") 
private String make; 
@Column(name = "MODEL") 
private String model; 
@Column(name = "RELEASE_YEAR") 
private String relDate; 
@Column(name = "RATING") 
private String rating; 
@Column(name = "PRICE") 
private String price; 


public int getId() { 
    return id; 
} 

public void setId(int id) { 
    this.id = id; 
} 

public String getMake() { 
    return make; 
} 

public void setMake(String make) { 
    this.make = make; 
} 

public String getModel() { 
    return model; 
} 

public void setModel(String model) { 
    this.model = model; 
} 

public String getRelDate() { 
    return relDate; 
} 

public void setRelDate(String relDate) { 
    this.relDate = relDate; 
} 

public String getRating() { 
    return rating; 
} 

public void setRating(String rating) { 
    this.rating = rating; 
} 

public String getPrice() { 
    return price; 
} 

public void setPrice(String price) { 
    this.price = price; 
}

DAO類

public class PhoneDao { 
private static SessionFactory factory; 

public static int register(Phone ph) { 
    int i = 0; 
    Session session = null; 
    Transaction t = null; 
    try{ 
    session = new Configuration().configure().addAnnotatedClass(Phone.class).buildSessionFactory().openSession(); 
    t = session.beginTransaction(); 
    System.out.println(ph.getRating()); 
    i = (Integer) session.save(ph); 
    t.commit(); 
    }catch(Throwable ex){ 
     if (t != null) 
      t.rollback(); 
     ex.printStackTrace(); 
    }finally{ 
     session.close(); 
    } 
    return i; 
}

Register.jsp 

<%@page import="org.nag.hibernate.kudos.Dao.PhoneDao"%> 
<jsp:useBean id="u" class="org.nag.hibernate.kudos.model.Phone" /> 
<jsp:setProperty property="*" name="u" /> 



<% 
int i = PhoneDao.register(u); 
if (i > 0) 
    out.print("You have successfully registered the device"); 
%> 


Record:<br> 
<jsp:getProperty property="make" name="u"/><br> 
<jsp:getProperty property="model" name="u"/><br> 
<jsp:getProperty property="relDate" name="u" /><br> 
<jsp:getProperty property="rating" name="u"/><br> 
<jsp:getProperty property="price" name="u" /><br>

CFG文件

<?xml version="1.0" encoding="utf-8"?> 
<!DOCTYPE hibernate-configuration SYSTEM 
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"> 

<hibernate-configuration> 
<session-factory> 
    <property name="hbm2ddl.auto">create</property> 
    <property name="dialect">org.hibernate.dialect.MySQLDialect</property> 
    <property name="connection.driver_class">com.mysql.jdbc.Driver</property> 
    <property name="connection.url">jdbc:mysql://localhost:3301/library</property> 
    <property name="connection.username">root</property> 
    <property name="connection.password">xxxxxx</property> 
    <mapping class="org.nag.hibernate.kudos.model.Phone"/> 
</session-factory>

當我張貼它成功地做它在數據庫中，但空值所有的Fileds。

我已經使用了的getProperty JSP的看到壽/ p和有它本身不是借字段的index.jsp進入

請幫助我。

謝謝 mark。

來源

2016-09-27 mark

爲什麼不將數據發佈到servlet而不是jsp？ –

是的，這是一個好主意，但。這樣它的工作。 – mark

我發現應該將hbm2ddl.auto屬性設置爲none而不是更新。

hibernate-configuration> 
<session-factory> 
    <property name="hbm2ddl.auto">none</property> 
    <property name="dialect">org.hibernate.dialect.MySQLDialect</property> 
    <property name="connection.driver_class">com.mysql.jdbc.Driver</property> 
    <property name="connection.url">jdbc:mysql://localhost:3301/library</property> 
    <property name="connection.username">root</property> 
    <property name="connection.password">xxxxx</property> 
    <mapping class="org.nag.hibernate.kudos.model.Phone"/> 
</session-factory> 
</hibernate-configuration>

來源

2016-09-27 18:49:45 mark

休眠沒有采取通過html/jsp字段輸入值

回答

相關問題