UNI-APP apk使用io流进行文件操作

一、manifest.json中增加权限

"<uses-permission android:name=\"android.permission.WRITE_SETTINGS\"/>","<uses-permission android:name=\"android.permission.WRITE_EXTERNAL_STORAGE\"/>","<uses-permission android:name=\"android.permission.READ_EXTERNAL_STORAGE\"/>"

"app-plus" : {"permissions": {"plus": {"description": "访问系统文件","features": ["io"]}},}

二、获取app目录下的文件进行读取

方式一：

//读取到app下的_doc下的目录  然后取到sqlists.json文件   没有create:true这个则是创建
plus.io.resolveLocalFileSystemURL("_doc/",(entry)=> {entry.getFile("sqlists.json",{create:true,exclusive:false},function(file){const fileReader = new plus.io.FileReader()fileReader.readAsText(file, 'utf-8')console.log(file.fullPath)fileReader.onloadend = (evt) => {console.log(JSON.parse(evt.target.result))_this.dataList = JSON.parse(evt.target.result).createTable_this.insertTable = JSON.parse(evt.target.result).insertTableconsole.log(JSON.parse(evt.target.result))console.log(_this.insertTable)// 调用其他方法进行数据操作_this.createTable()}// })}, (err) => {console.log("发生了错误", err)})

方式二：

//app安卓的情况  在这个位置的目录  然后取到sqlists.json文件  然后同样的道理进行读取
plus.io.resolveLocalFileSystemURL("/storage/emulated/0/Android/data/uni.demo.test/apps/__UNI__8D07247/doc/sqlists.json", (entry) => {entry.file((file) => {const fileReader = new plus.io.FileReader()fileReader.readAsText(file, 'utf-8')console.log(file.fullPath)fileReader.onloadend = (evt) => {console.log(JSON.parse(evt.target.result))_this.dataList = JSON.parse(evt.target.result).createTable_this.insertTable = JSON.parse(evt.target.result).insertTableconsole.log(JSON.parse(evt.target.result))console.log(_this.insertTable)// 调用其他方法进行数据操作_this.createTable()}// })}, (err) => {console.log("发生了错误", err)})

三、uni-app app 拷贝初始文件

plus.io.resolveLocalFileSystemURL('_www/static/_db/init.db',function(entry){plus.io.resolveLocalFileSystemURL("_doc",function(root){entry.copyTo(root ,'test.db' ,function(){console.log("拷贝成功");},function(){console.log("拷贝失败");})})
});

四、这是json文件

{"createTable": ["CREATE TABLE if not exists \"app_dept\" (\"id\" INTEGER PRIMARY KEY AUTOINCREMENT  ,\"pid\" INTEGER ,\"dept_name\" TEXT ,\"dept_brief_name\" TEXT,\"dept_type\" TEXT)","CREATE TABLE if not exists \"app_org_user\" (\"user_id\" INTEGER PRIMARY KEY AUTOINCREMENT  ,\"dept_id\" INTEGER ,\"user_name\" TEXT ,\"sex\" TEXT ,\"birthday\" TEXT  ,\"img\" TEXT,\"mz\" TEXT ,\"native_place\" TEXT ,\"birth_place\" TEXT ,\"join_party_time\" TEXT ,\"start_work\" TEXT ,\"health_status\" TEXT ,\"technical_position\" TEXT  ,\"speciality\" TEXT,\"full_time_edu\" TEXT,\"full_time_degree\" TEXT,\"full_time_school\" TEXT,\"full_time_yuan\" TEXT,\"full_time_major\" TEXT,\"job_time_edu\" TEXT,\"job_time_degree\" TEXT,\"job_time_school\" TEXT,\"job_time_yuan\" TEXT,\"job_time_major\" TEXT,\"user_level\" TEXT,\"now_posts\" TEXT,\"resumes\" TEXT,\"familys\" TEXT,\"ext01\" TEXT,\"ext02\" TEXT,\"ext03\" TEXT,\"ext04\" TEXT,\"ext05\" TEXT)","CREATE TABLE if not exists \"app_org_user_post\" (\"id\" INTEGER PRIMARY KEY AUTOINCREMENT  ,\"user_id\" INTEGER ,\"user_name\" TEXT ,\"post_dept_name\" TEXT,\"jobs_work\" TEXT,\"re_start_time\" TEXT,\"test_time\" TEXT,\"end_time\" TEXT ,\"real_end_time\" TEXT ,\"job_status\" TEXT ,\"reasons\" TEXT ,\"create_time\" TEXT )","CREATE TABLE if not exists \"app_org_user_resumes\" (\"id\" INTEGER PRIMARY KEY AUTOINCREMENT  ,\"user_id\" INTEGER ,\"user_name\" TEXT ,\"title\" TEXT,\"start_time\" TEXT,\"end_time\" TEXT,\"create_time\" TEXT)",],"insertTable": ["insert OR REPLACE INTO 'app_dept' (id,pid,dept_name,dept_brief_name,dept_type) values(\"311\",\"0\",\"山河大学\",\"山河大学\",\"0\")","insert OR REPLACE INTO 'app_dept' (id,pid,dept_name,dept_brief_name,dept_type) values(\"439\",\"311\",\"领导班子\",\"院领导\",\"0\")","insert OR REPLACE INTO 'app_dept' (id,pid,dept_name,dept_brief_name,dept_type) values(\"440\",\"311\",\"党政办公室\",\"党政办公室\",\"0\")","insert OR REPLACE INTO 'app_dept' (id,pid,dept_name,dept_brief_name,dept_type) values(\"442\",\"311\",\"党委组织部 机关党总支 党校\",\"党委组织部 机关党总支 党校\",\"0\")",]
}