前置:
Api:8
语言:js开发
开始:
1.创建项目:
2.示例代码
test.hml
<div class="container">
<button type="capsule" class="btn" onclick="CreateRdbStore">创建数据库</button>
<div class="dataRdpBtn">
<button type="capsule" class="btn" onclick="insertData">写入数据</button>
<button type="capsule" class="btn" onclick="selectData">查询数据</button>
<button type="capsule" class="btn" onclick="updateData">修改数据</button>
<button type="capsule" class="btn" onclick="deleteData">删除数据</button>
</div>
<div class="dataRdpBox">
<text class="text"><span>写入姓名:{{ name }}</span></text>
<text class="text"><span>写入年龄:{{ age }}</span></text>
<divider style="background-color: black;height: 2px;"></divider>
<text class="text"><span>查询姓名:{{ name1 }}</span></text>
<text class="text"><span>查询年龄:{{ age1 }}</span></text>
<divider style="background-color: black;height: 2px;"></divider>
</div>
</div>
1.2.3.4.5.6.7.8.9.10.11.12.13.14.15.16.17.18.19.
复制
test.css
.container {
flex-direction: column;
justify-content: center;
align-items: center;
width: 100%;
height: 100%;
}
.dataRdpBtn{
flex-direction: row;
justify-content: center;
align-items: center;
width: 100%;
flex-wrap: wrap;
}
.btn {
font-size: 50px;
margin: 10px;
}
.dataRdpBox{
flex-direction: column;
justify-content: flex-start;
align-items: flex-start;
width: 90%;
height: 500px;
border: 2fp;
}
.text{
font-size: 50px;
width: 100%;
margin: 10px;
}
1.2.3.4.5.6.7.8.9.10.11.12.13.14.15.16.17.18.19.20.21.22.23.24.25.26.27.28.29.30.31.32.
复制
test.js
export default {
data: {
rdb: null,
name: "",
age: "",
name1: "",
age1: "",
},
//创建数据库
CreateRdbStore() {
var that = this;
dataRdb.getRdbStore({
name: "demoRdb.db",
}, 1, function (err, rdbStoreData) {
if (err) {
console.log('获取失败' + err)
} else {
const SQL_CREATE_TABLE = "CREATE TABLE IF NOT EXISTS EMPLOYEE (ID INTEGER PRIMARY KEY AUTOINCREMENT, NAME TEXT NOT NULL, AGE INTEGER)"
rdbStoreData.executeSql(SQL_CREATE_TABLE, null)
that.rdb = rdbStoreData;
console.log('dataRdb success' + that.rdb)
}
})
},
//写入数据
insertData() {
let that = this;
const dataObj = {
"NAME": "张三",
"AGE": 20,
}
let promise = that.rdb.insert("EMPLOYEE", dataObj)
promise.then(async (ret) => {
console.log("插入成功: " + ret)
that.name = dataObj.NAME;
that.age = dataObj.AGE;
}).catch((err) => {
console.info(err)
})
},
//查询数据
selectData() {
let that = this;
let selectData = new dataRdb.RdbPredicates("EMPLOYEE")
selectData.equalTo("NAME", that.name)
console.log("查询条件:" + that.name)
that.rdb.query(selectData, ["ID", "NAME", "AGE"], function (err, resultSet) {
console.info(" success resultSet columnNames:" + resultSet.columnNames)
console.info(" success resultSet columnCount:" + resultSet.columnCount)
if (resultSet.rowCount > 0) {
resultSet.goToFirstRow();
const id = resultSet.getLong(resultSet.getColumnIndex("ID"))
const name = resultSet.getString(resultSet.getColumnIndex("NAME"))
const age = resultSet.getLong(resultSet.getColumnIndex("AGE"))
console.log("id:" + id + "||" + "name:" + name + "||" + "age:" + age);
that.name1 = name;
that.age1 = age;
} else {
console.log("NOT DATA");
}
})
},
//修改数据
updateData() {
var that = this;
let updateValue = {
"NAME": "李四",
"AGE": 25,
}
let updateData = new dataRdb.RdbPredicates("EMPLOYEE")
updateData.equalTo("NAME", that.name)
console.log("查询条件:" + that.name)
that.rdb.update(updateValue, updateData, function (err, ret) {
console.log("修改数据成功:" + ret)
that.name = updateValue.NAME;
that.age = updateValue.AGE;
})
},
//删除数据
deleteData() {
let that = this
let deleteData = new dataRdb.RdbPredicates("EMPLOYEE")
deleteData.equalTo("NAME", that.name)
that.rdb.delete(deleteData, function (err, rows) {
if (rows.rowCount > 0) {
rows.goToFirstRow();
const name = rows.getString(rows.getColumnIndex("NAME"))
const age = rows.getLong(rows.getColumnIndex("AGE"))
console.log("name:" + name + "||" + "age:" + age);
that.name = "";
that.age = "";
that.name1 = "";
that.age1 = "";
} else {
console.log("NOT DATA");
}
console.log("删除成功: " + rows)
})
}
}
1.2.3.4.5.6.7.8.9.10.11.12.13.14.15.16.17.18.19.20.21.22.23.24.25.26.27.28.29.30.31.32.33.34.35.36.37.38.39.40.41.42.43.44.45.46.47.48.49.50.51.52.53.54.55.56.57.58.59.60.61.62.63.64.65.66.67.68.69.70.71.72.73.74.75.76.77.78.79.80.81.82.83.84.85.86.87.88.89.90.91.92.93.94.95.96.97.98.99.100.101.102.103.104.105.106.107.108.
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3.效果如图:
4、代码地址
(https://gitee.com/jltfcloudcn/jump_to/tree/master/dataRdb)