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在Eclipse中使用Spring JDBC库时遇到麻烦

[英]Having trouble with using Spring JDBC libraries in Eclipse

原文 2013-05-29 14:33:51 6 2 java/ eclipse/ spring

I have recently downloaded the latest version of the spring framework: spring-framework-4.0.0.M1-dist.zip(sha1), but I only wanted the JDBC libraries that came with it, which consisted of 3 jars, as far as I could tell. 我最近下载了spring框架的最新版本：spring-framework-4.0.0.M1-dist.zip（sha1），但是到目前为止，我只想要它随附的JDBC库，它由3个jar组成。我可以说。 I have tried to include these jars in my project in Eclipse by configuring my build path for them. 我试图通过配置它们的构建路径来将这些jars包含在Eclipse中的项目中。 Whenever I do this, and try to extend a class from one of these libraries, it says it is unrecognized, and as a solution, to import the appropriate package: okay, fine. 每当我这样做并尝试从其中一个库中扩展一个类时，它都说无法识别，并且作为一种解决方案，它导入了适当的包：好的，很好。 So I import it, and it still throws me an error saying: "The type org.springframework.dao.support.DaoSupport cannot be resolved. It is indirectly referenced from required .class files" whenever I hover over the class being extended. 因此，我将其导入，但仍然出现错误：“无法解析类型org.springframework.dao.support.DaoSupport。它从所需的.class文件中间接引用”。

I would provide a screenshot, but I need to have at least a 10 reputation, and I am new to this website, so I apologize. 我将提供一个屏幕截图，但我至少必须有10个声誉，并且我是该网站的新手，所以我深表歉意。

I have tried using the default unzipping tool which is already on Windows 7, I have used 7Zip, and have tried to include external jars without creating a folder in Eclipse to place the jars in, and I have tried to make a folder and include them, and have also tried deleting and re-downloading the entire spring framework. 我尝试使用Windows 7上已经存在的默认解压缩工具，我使用了7Zip，并尝试包括外部jar，而没有在Eclipse中创建用于放置jar的文件夹，并且尝试制作一个文件夹并将其包括在内，并且还尝试删除并重新下载整个spring框架。 Still the same error. 还是一样的错误。

Any help would be greatly appreciated. 任何帮助将不胜感激。

2 个解决方案

When I face this problem usually, I go with a clean build in eclipse if the project is configured correctly. 通常，当我面对这个问题时，如果项目配置正确，我将使用eclipse中的干净构建。 In order to use any jar files in general you right click on the project Build Path->Configure Build Path and make sure that you see those jars in libraries tab, if not add them; 为了通常使用任何jar文件，请右键单击项目“构建路径”->“配置构建路径”，并确保在库选项卡中看到了这些jar，如果未添加它们的话； having them in a 'lib' directory serves no purpose as they must be included in the .classpath file of the project regardless the directory. 将它们放在“ lib”目录中没有任何作用，因为无论目录如何，它们都必须包含在项目的.classpath文件中。

Hey I found solution to this problem that after adding some jar package (DapSupport dependent some other classes) like [org.springframework.transaction-3.0.5.RELEASE.jar] compiled without errors. 嘿，我发现此问题的解决方案是在添加了一些jar包（依赖于DapSupport的其他一些类）后，例如[org.springframework.transaction-3.0.5.RELEASE.jar]编译成功了。 If there is fault, it is necessary to see whether there are other jar package has not been imported....thanks 如果有故障，就要看是否还有其他的jar包没有被导入。