Eclipse报告我的JPA项目的错误 [英] Eclipse reports error on my JPA project
问题描述
每次我做一个JPA项目，Eclipse报告说我的项目有错误，但我不明白为什么这样做。我在下面添加了图像和错误：
Each time I make a JPA project Eclipse reports that there are errors in my project but I do not understand why it does so. I added image and errors below:
描述资源路径位置类型列id无法在表页上解析
Page.java / BreakpointJPA / src / no /断点/域行
14 JPA问题
Description Resource Path Location Type Column "id" cannot be resolved on table "page" Page.java /BreakpointJPA/src/no/breakpoint/domain line 14 JPA Problem
描述资源路径位置类型列title不能
在表
pagePage.java / BreakpointJPA / src / no /断点/域行18 JPA
问题
Description Resource Path Location Type Column "title" cannot be resolved on table "page" Page.java /BreakpointJPA/src/no/breakpoint/domain line 18 JPA Problem
描述资源路径位置类型主键加入列id
无法解析表
pagePage.java / BreakpointJPA / src / no /断点/域行10 JPA
问题
Description Resource Path Location Type Primary key join column "id" cannot be resolved on table "page" Page.java /BreakpointJPA/src/no/breakpoint/domain line 10 JPA Problem
推荐答案
我已经有了ame问题，我的解决办法是刷新数据库连接。
I've had the same problem, the solution for me was to refresh the database connection.
打开JPA视图，查找数据源资源管理器。在那里你打开数据库连接，连接你的数据库，点击刷新。然后在您的文件中进行一些更改并保存，我在我的id字段中添加了一个@Column（name =）注释。之后，错误消息消失了，我提高了Column注释。
Open the JPA view, find the data source explorer. There you open Database Connection, connect with your database, hit refresh. Then make some changes in your file and save it, i added an @Column(name = "") annotation to my id field. After that the error message was gone, and i ereased the Column annotation.
问题似乎是eclipse在建立第一个连接后读取数据库表，之后连接关闭。所以如果你像我这样做，在你的数据库中这个第一个连接之后做了一些改变，比如将字段名称从foo_id改为只是id，eclipse不知道这个错误，并附带这个错误。
The Problem seems to be that eclipse reads the database tables after establishing the first connection, after that the connection is closed. So if you, like i did, made some changes after this first connection in your database, like changing the field name from foo_id to just id, eclipse didn't know that and comes with this error.
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