Java 找不到 Spring dao 类 org.springframework.dao.DuplicateKeyException
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Spring dao class not found org.springframework.dao.DuplicateKeyException
提问by Alex Burdusel
I am trying to use a jdbcTemplate.queryand I get the class not found error. I am using spring-dao 2.0.8 and looked inside the library and couldn't find any DuplicateKeyExceptionclass indeed. From maven repositorythis seems to be the latest release for spring-dao.
我正在尝试使用 ajdbcTemplate.query并且我收到 class not found 错误。我正在使用 spring-dao 2.0.8 并查看库内部，DuplicateKeyException确实找不到任何类。从maven 存储库来看，这似乎是 spring-dao 的最新版本。
The code where I am getting the error is:
我收到错误的代码是：
ResultSet resultSet = (ResultSet)jdbcTemplate.query (query, new ResultSetExtractor<ResultSet>() {
@Override
public ResultSet extractData(ResultSet rs) throws SQLException, DataAccessException {
return rs;
}
});
And the stack:
和堆栈：
Exception in thread "main" java.lang.NoClassDefFoundError: org/springframework/dao/DuplicateKeyException
at org.springframework.jdbc.support.JdbcAccessor.getExceptionTranslator(JdbcAccessor.java:99)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:407)
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:456)
at DAO.MySQLAccess.getAccounts(MySQLAccess.java:95)
Caused by: java.lang.ClassNotFoundException: org.springframework.dao.DuplicateKeyException
at java.net.URLClassLoader.run(URLClassLoader.java:366)
at java.net.URLClassLoader.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
... 7 more
Isn't this the latest release or why is it giving the error in the first place?
这不是最新版本还是为什么它首先给出错误？
采纳答案by Ben Thurley
Sounds like you have a jar missing from the classpath. I guess you're not using maven.
听起来您的类路径中缺少一个 jar。我猜你没有使用maven。
I searched for jars containing this class and came up with this.
http://mavenhub.com/c/org/springframework/dao/DuplicateKeyException/jar
我搜索了包含这个类的 jars 并想出了这个。
http://mavenhub.com/c/org/springframework/dao/DuplicateKeyException/jar
Looks like you need the org.springframework.transaction jar. Or use maven and it should work out your dependencies for you.
看起来您需要 org.springframework.transaction jar。或者使用 maven，它应该为你解决你的依赖关系。
