The method getSubmittedFileName() is undefined for the type Part
时间: 2024-06-03 17:11:11 浏览: 12
这是一个关于Java Web编程的问题。在Java Servlet 3.0(或以上)中,我们可以使用javax.servlet.http.Part API来处理HTTP请求中的文件上传。在使用Part对象时,可以使用getSubmittedFileName()方法来获取上传文件的文件名。如果你在使用该方法时出现“undefined for the type Part”的错误,可能是因为你没有在代码中正确导入javax.servlet.http.Part的包。
相关问题
The method Statement() is undefined for the type Connection
The error message "The method Statement() is undefined for the type Connection" typically occurs when you try to call the `Statement()` method on a `Connection` object in Java, but the method is not defined for that class.
To fix this error, you need to create a `Statement` object separately using the `createStatement()` method of the `Connection` object. Here is an example:
```
Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/mydatabase", "username", "password");
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("SELECT * FROM mytable");
```
In this example, the `getConnection()` method is used to establish a connection to the MySQL database. Then, the `createStatement()` method is called on the `conn` object to create a `Statement` object, which is used to execute a query on the database.
Make sure you have imported the necessary classes for `Connection`, `Statement`, and `ResultSet`.
The method breed() is undefined for the type eagle
The error message "The method breed() is undefined for the type eagle" suggests that you are attempting to call the function breed() on an object of the class eagle, but the breed() function is not defined in the eagle class.
To resolve this issue, you should define the breed() function in the eagle class. Here's an example of how you could define the breed() function for an eagle class:
```
public class eagle {
// instance variables
private String name;
private int age;
// constructor
public eagle(String name, int age) {
this.name = name;
this.age = age;
}
// getter and setter methods for name and age
public void breed() {
// code to breed an eagle
}
}
```
In this example, the breed() function is defined as a method of the eagle class, and can be called on any object of the eagle class.
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