如何将SQLite数据库打包到jar中？ [英] How to pack a SQLite database into a jar?

问题描述

我有一个Java项目，它使用一个小的SQLite数据库。

I've got a Java project, which uses a small SQLite database.

现在我想用Database文件和驱动程序创建一个可执行的jar文件（ sqlitejdbc-v056 ）里面有一个包含所有内容的包。

Now I want to create an executable jar File, with the Database file and the driver (sqlitejdbc-v056) inside to have a single, all containing package.

我的包结构如下所示：

Bank
|
| 
+---src
|   ...
|           
+---bin
|   ...
|           
+---data
|       bank_database.db
|       
+---img
|       ajax-refresh-icon.gif
|       
+---doc
|       Datenbankschema.uxf
|       
\---resources
        sqlitejdbc-v056.jar

我访问具有这个小Java类的DB：

I access the DB with this small Java class:

package model;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class DBHandle {

    Connection conn;

    public DBHandle() throws Exception {
        Class.forName("org.sqlite.JDBC");
    }

    public Connection openConnection() throws SQLException {
        conn = DriverManager.getConnection("jdbc:sqlite:data\\bank_database.db");
        return conn;
    }

    public void closeConnection() throws SQLException {
        if (!conn.isClosed()) {
            conn.close();
        }

    }

}

<如果我使用Eclipse导出管理器将所有这些内容打包到jar中并尝试执行它，则会为JDBC驱动程序抛出 ClassNotFoundException 。

如何解决这个问题？

甚至可以将资源修改为与数据库相关的jar吗？

Is it even possible to modify resources into a jar regarding to the database?

推荐答案

AFAIK你不能在没有太多麻烦的情况下修改jar内的资源（基本上它是一个zip，因此它应该是可能的，但可能有由JVM等文件锁定。）。

AFAIK you can't modify resources inside a jar without much hassle (basically it is a zip and thus it should be possible, but there might be file locks by the JVM etc.).

此外，你不能把一个jar放到另一个jar中。但是，如果需要，可以解压缩驱动程序jar并将内容包含在jar中。 Maven程序集插件的目标是这样做： jar-with-dependencies 。

Additionally, you can't put one jar into another. However, you could unpackage the driver jar and include the contents in your jar, if you want that. The Maven assembly plugin has a goal that does this: jar-with-dependencies.

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