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如何在这种语句中注入类 UserProfile?这是使用 Struts2 - Spring 插件。

( UserProfile userProfile = em.find(UserProfile.class,"1");) ---> 我不知道如何在春季更改注射风格?

package tester;

/**
 *
 * @author god-gavedmework
 */


import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.EntityTransaction;
import javax.persistence.Persistence;
import lotmovement.business.entity.UserProfile;



/**
 *
 * @author god-gavedmework
 */
public class Record_exist {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {

        EntityManagerFactory entityManagerFactory = 
        Persistence.createEntityManagerFactory("LotMovementPU");

        EntityManager em = entityManagerFactory.createEntityManager();

        EntityTransaction userTransaction = em.getTransaction();
        userTransaction.begin();
        UserProfile userProfile = em.find(UserProfile.class,"1");

        if(userProfile.getUserId().equals("tok"))
        {
            System.out.println("find");
            System.out.println("write successful");
        }


        entityManagerFactory.close();


    }
}

我的 Spring 注入不起作用。我使用 setter 注入了 UserProfile 实体,但我认为存在问题,因为它无法检索任何数据。

private UserProfile userProfile; --> it does inject.

entityStart.em.find(UserProfile.class, userId)--> will not work in the sense that no values are retrieved.

完成课程

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package lotmovement.business.crud;

import lotmovement.business.entity.UserProfile;

/**
 *
 * @author god-gavedmework
 */
public class RecordExistUserProfile {

    private EntityStart entityStart;
    private UserProfile userProfile;


    public boolean checkrecordexist(String userId) {
        entityStart.StartDbaseConnection();
        entityStart.em.find(UserProfile.class, userId); ---> this one will not work.

        if (userId.equals(userProfile.getUserId())) {
            return true;
        } else {
            return false;
        }
    }

    public boolean CheckPasswordCorrect(String userId, String password) {
        entityStart.StartDbaseConnection();

        UserProfile up = entityStart.em.find(UserProfile.class, userId); --> this one will work but it is not injected...


        if (password.equals(up.getPassword())) {
            return true;
        } else {
            return false;
        }

    }



    public UserProfile getUserProfile() {
        return userProfile;
    }

    public void setUserProfile(UserProfile userProfile) {
        this.userProfile = userProfile;
    }

    public EntityStart getEntityStart() {
        return entityStart;
    }

    public void setEntityStart(EntityStart entityStart) {
        this.entityStart = entityStart;
    }



}
4

1 回答 1

0

最后我找到了问题的根本原因和解决方案。

根本原因:

用户配置文件用户配置文件;--> 它将注入 UserProfile 实体。

entityStart.em.find(UserProfile.class, userId); --> 这不起作用,因为它没有传递给类变量 userProfile..

解决方案:

用户配置文件用户配置文件;--> 注入 UserProfile 实体。

userProfile = entityStart.em.find(UserProfile.class, userId); ---> find() 现在可以使用 find。

于 2012-12-13T20:25:17.933 回答