未报告的异常 java.sql.SQLException; 必须被捕获或声明被抛出？
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Unreported exception java.sql.SQLException; must be caught or declared to be thrown?
提问by karikari
I got this error while trying to compile the below code. I would like to know what is I have done wrong.
尝试编译以下代码时出现此错误。我想知道我做错了什么。
unreported exception java.sql.SQLException; must be caught or declared to be thrown
Class.forName(myDriver);
^
private void setupInfo() {
Driver driver = new org.gjt.mm.mysql.Driver();
String url = "jdbc:mysql://localhost:3306/test";
String username = "root";
String password = "123456";
String problemFeatureSpecTableName = "ProblemFeatureSpec";
String solutionFeatureSpectTableName = "SolutionFeatureSpec";
String classTableName = "Class";
String extraDataTableName = "ExtraData";
String casebaseTablename = "CaseBase";
String problemTableName = "Problem";
String solutionTableName = "Solution";
String inactiveContextsTableName = "InactiveContext";
String constantsTableName = "Constants";
dbInfo = new DBInfo(new JDBCDriverInfo(driverName, url, username, password),constantsTableName);
problemSpecInfo = new FeatureSpecRDBInfo(problemFeatureSpecTableName, classTableName, extraDataTableName);
solutionSpecInfo = new FeatureSpecRDBInfo(solutionFeatureSpectTableName, classTableName, extraDataTableName);
rdbCasebaseInfo = new RDBCaseBaseInfo(casebaseTablename, solutionTableName, problemTableName, inactiveContextsTableName);
}
采纳答案by Matt Ball
You either need to catchthe exception in your method:
您要么需要在方法中捕获异常：
public void setupInfo()
{
try
{
// call methods that might throw SQLException
}
catch (SQLException e)
{
// do something appropriate with the exception, *at least*:
e.printStackTrace();
}
}
Or declarethe method to throw SQLException:
或者声明抛出的方法SQLException：
private void setupInfo() throws SQLException
{
// call methods that might throw SQLException
}
回答by Bnjmn
This line of code throws an uncaught exception:
这行代码抛出一个未捕获的异常：
Driver driver = new org.gjt.mm.mysql.Driver();
try this:
尝试这个：
try {
Driver driver = new org.gjt.mm.mysql.Driver();
}
catch (java.sql.SQLException e) {
// you may want to do something useful here
// maybe even throw new RuntimException();
}
回答by Pakka Techie
Catch the exception or throw it. Better use an IDE (Eclipse or Netbeans), which will tell you the error the moment you press enter.
捕获异常或抛出它。最好使用 IDE（Eclipse 或 Netbeans），它会在您按下 Enter 键时告诉您错误。
回答by Nowaker
Always try to get help from your IDE. IDEs can often fix the error automatically. Press alt+enter in IntelliJ IDEA or ctrl+1 in Eclipse and choose to fix the error.
始终尝试从您的 IDE 获得帮助。IDE 通常可以自动修复错误。在 IntelliJ IDEA 中按 alt+enter 或在 Eclipse 中按 ctrl+1 并选择修复错误。
