uni-app中如何打包WCDB SQLite数据依赖并作为插件使用？

发布于 1周前 作者 eggper 来自 Uni-App

uni-app中如何打包WCDB SQLite数据依赖并作为插件使用？

打包之后，使用会报错：

```javascript
callModuleMethod >>> invoke module:WCDB, method:testInsertUsers failed. java.lang.reflect.InvocationTargetException  
    at java.lang.reflect.Method.invoke(Native Method)  
    at com.taobao.weex.bridge.MethodInvoker.invoke(Unknown Source:2)  
    at com.taobao.weex.bridge.NativeInvokeHelper.invoke(Unknown Source:134)  
    at com.taobao.weex.bridge.WXModuleManager.dispatchCallModuleMethod(Unknown Source:10)  
    at com.taobao.weex.bridge.WXModuleManager.callModuleMethod(Unknown Source:111)  
    at com.taobao.weex.bridge.WXBridgeManager.callModuleMethod(Unknown Source:85)  
    at com.taobao.weex.bridge.WXBridgeManager.callNativeModule(Unknown Source:89)  
    at com.taobao.weex.bridge.WXBridge.callNativeModule(Unknown Source:183)  
    at com.taobao.weex.base.SystemMessageHandler.nativeRunWork(Native Method)  
    at com.taobao.weex.base.SystemMessageHandler.handleMessage(Unknown Source:2)  
    at android.os.Handler.dispatchMessage(Handler.java:106)  
    at android.os.Looper.loopOnce(Looper.java:211)  
    at android.os.Looper.loop(Looper.java:300)  
    at android.os.HandlerThread.run(HandlerThread.java:67)  
Caused by: java.lang.NoClassDefFoundError: Failed resolution of: Lcom/tencent/wcdb/core/Database;  
    at cn.com.bjprdhd.wcdb.WCDBModule.testInsertUsers(WCDBModule.java:132)  
    at java.lang.reflect.Method.invoke(Native Method)  
    at com.taobao.weex.bridge.MethodInvoker.invoke(Unknown Source:2)  
    at com.taobao.weex.bridge.NativeInvokeHelper.invoke(Unknown Source:134)  
    at com.taobao.weex.bridge.WXModuleManager.dispatchCallModuleMethod(Unknown Source:10)  
    at com.taobao.weex.bridge.WXModuleManager.callModuleMethod(Unknown Source:111)  
    at com.taobao.weex.bridge.WXBridgeManager.callModuleMethod(Unknown Source:85)  
    at com.taobao.weex.bridge.WXBridgeManager.callNativeModule(Unknown Source:89)  
    at com.taobao.weex.bridge.WXBridge.callNativeModule(Unknown Source:183)  
    at com.taobao.weex.base.SystemMessageHandler.nativeRunWork(Native Method)  
    at com.taobao.weex.base.SystemMessageHandler.handleMessage(Unknown Source:2)  
    at android.os.Handler.dispatchMessage(Handler.java:106)  
    at android.os.Looper.loopOnce(Looper.java:211)  
    at android.os.Looper.loop(Looper.java:300)  
    at android.os.HandlerThread.run(HandlerThread.java:67)  
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.tencent.wcdb.core.Database" on path: DexPathList[[dex file "InMemoryDexFile[cookie=[0, -5476376631492974784]]", zip file "/data/app/~~3nYa-yaAau3070NTPnRgjA==/cn.com.bjprdhd.iot.GpZYJdrqETBAL5fBkS7Q==/base.apk"],nativeLibraryDirectories=[/data/app/~~3nYa-yaAau3070NTPnRgjA==/cn.com.bjprdhd.iot.GpZYJdrqETBAL5fBkS7Q==/lib/arm64, /data/app/~~3nYa-yaAau3070NTPnRgjA==/cn.com.bjprdhd.iot.GpZYJdrqETBAL5fBkS7Q==/base.apk!/lib/arm64-v8a, /system/lib64, /system_ext/lib64]]  
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:259)  
    at java.lang.ClassLoader.loadClass(ClassLoader.java:379)  
    at java.lang.ClassLoader.loadClass(ClassLoader.java:312)

Harmonyos Next教程
1 回复

在uni-app中打包WCDB SQLite数据依赖并作为插件使用，可以通过以下步骤实现。这里假设你已经熟悉uni-app的开发流程和原生插件的创建。

1. 准备WCDB SQLite依赖

首先，你需要获取WCDB SQLite的源码或者预编译库。WCDB是腾讯开源的一个高效的SQLite封装库，支持多种平台。

2. 创建uni-app原生插件

在uni-app项目根目录下创建native-plugins文件夹，并在其中创建一个新的插件文件夹，例如my-wcdb-plugin。

mkdir -p native-plugins/my-wcdb-plugin

在my-wcdb-plugin文件夹中，创建以下文件结构：

my-wcdb-plugin/
├── Android/
│   └── src/
│       └── main/
│           ├── java/
│           │   └── com/
│           │       └── example/
│           │           └── mywcdbplugin/
│           │               └── MyWCDBPlugin.java
│           ├── res/
│           └── AndroidManifest.xml
├── iOS/
│   └── Classes/
│       └── MyWCDBPlugin.m
├── plugin.json

3. 实现Android插件

在Android/src/main/java/com/example/mywcdbplugin/MyWCDBPlugin.java中：

package com.example.mywcdbplugin;

import android.content.Context;
import io.dcloud.feature.uniapp.annotation.UniJSMethod;
import io.dcloud.feature.uniapp.bridge.UniJSCallback;
import io.dcloud.feature.uniapp.common.UniModule;

public class MyWCDBPlugin extends UniModule {
    @UniJSMethod(uiThread = false)
    public void openDatabase(String name, String version, UniJSCallback callback) {
        // 使用WCDB打开数据库的逻辑
        // ...
        callback.invoke("Database opened successfully");
    }
}

4. 实现iOS插件

在iOS/Classes/MyWCDBPlugin.m中：

#import <Foundation/Foundation.h>
#import <UniApp/UniModule.h>
#import <WCDB/WCDB.h>

@interface MyWCDBPlugin : UniModule
@end

@implementation MyWCDBPlugin

- (void)openDatabase:(NSString *)name version:(NSString *)version resolve:(UniJSCallback *)resolve reject:(UniJSCallback *)reject {
    // 使用WCDB打开数据库的逻辑
    // ...
    resolve(@"Database opened successfully");
}

@end

5. 配置plugin.json

在plugin.json中配置插件信息：

{
    "id": "my-wcdb-plugin",
    "version": "1.0.0",
    "name": "My WCDB Plugin",
    "description": "A plugin for using WCDB SQLite in uni-app",
    "platforms": {
        "android": {
            "package": "com.example.mywcdbplugin.MyWCDBPlugin",
            "plugin": "src/main/java/com/example/mywcdbplugin/MyWCDBPlugin.java"
        },
        "ios": {
            "class": "MyWCDBPlugin",
            "header": "Classes/MyWCDBPlugin.h"
        }
    }
}

6. 在uni-app中使用插件

在manifest.json中引入插件：

"nativePlugins": [
    {
        "plugins": [
            {
                "id": "my-wcdb-plugin",
                "version": "1.0.0",
                "provider": "wxxxxxxxxxx"
            }
        ]
    }
]

然后在页面中调用：

uni.requireNativePlugin('my-wcdb-plugin').openDatabase('test.db', '1.0', (res) => {
    console.log(res);
});

这样，你就成功地在uni-app中打包并使用WCDB SQLite数据依赖作为插件了。

回到顶部