[英]Problem with Spring and database connection
I got a problem with my connection via database and spring.我通过数据库和 spring 的连接出现问题。 I searching in all ends of internet for resolution but without success我在互联网的各个端搜索解决方案但没有成功
My problem is about retrieve my list of class from database to Spring.我的问题是关于将我的类列表从数据库检索到 Spring。 I want to do an electronic journey app, and this is only one thing I cannot pass.我想做一个电子旅行应用程序,这只是我不能通过的一件事。 So my question is -> what i need to get that connection?所以我的问题是 -> 我需要什么才能获得这种联系? ( maybe some ClassDAO
, ClassRepository
, more) (也许一些ClassDAO
, ClassRepository
,更多)
So, my Class.java looks like this所以,我的 Class.java 看起来像这样
package com.example.JournalElectronic.model;
import javax.persistence.*;
import java.util.List;
@Entity
public class Class {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
private String classNr;
private int roomNr;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getClassNr() {
return classNr;
}
public void setClassNr(String classNr) {
this.classNr = classNr;
}
public int getRoomNr() {
return roomNr;
}
public void setRoomNr(int roomNr) {
this.roomNr = roomNr;
}
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
@ManyToOne
@JoinColumn(name = "user_id")
private User user;
}
and my "some" html file ->和我的“一些”html文件->
<div class="btn-group">
<button> class="btn btn-secondary btn-sm dropdown-toggle" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Klasy
</button>
<tr th:each var="emp" items="${classList}" varStatus="status">
<tr>
<td>${status.index + 1}</td>
<td>${emp.name}</td>
</tr>
</c:forEach>
And my second is about separate css out of .html file.我的第二个是关于 .html 文件中的单独 css。 My friend added all css actions into .html files, and I want to separate (for good looking code), but if i do with "ref" I cannot see colours and all of my buttons all messed up.我的朋友将所有 css 操作添加到 .html 文件中,我想分开(为了好看的代码),但如果我使用“ref”,我看不到颜色,我的所有按钮都搞砸了。
您是否尝试将 css 代码放在一个单独的 .css 文件中并将其链接到 HTML 像这样<link rel="stylesheet" type="text/css" href="<c:url value="/css/some.css"/>"/>
?
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