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Java前后端协议联调

十八岁讨厌编程 人气:0

前后台协议联调

修改功能

需求:完成图书信息的修改功能

  1. 找到页面中的编辑按钮,该按钮绑定了@click="handleUpdate(scope.row)"
  2. 在method的handleUpdate方法中发送异步请求根据ID查询图书信息
  3. 根据后台返回的结果,判断是否查询成功,如果查询成功打开修改面板回显数据,如果失败提示错误信息
  4. 修改完成后找到修改面板的确定按钮,该按钮绑定了@click="handleEdit()"
  5. 在method的handleEdit方法中发送异步请求提交修改数据
  6. 根据后台返回的结果,判断是否修改成功。如果成功提示错误信息,关闭修改面板,重新查询数据,如果失败提示错误信息

scope.row代表的是当前行的行数据,也就是说,scope.row就是选中行对应的json数据,如下:

{
    "id": 1,
    "type": "计算机理论",
    "name": "Spring实战 第五版",
    "description": "Spring入门经典教程,深入理解Spring原理技术内幕"
}

修改handleUpdate方法

//弹出编辑窗口
handleUpdate(row) {
    // console.log(row);   //row.id 查询条件
    //查询数据,根据id查询
    axios.get("/books/"+row.id).then((res)=>{
        if(res.data.code == 20041){
            //展示弹层,加载数据
            this.formData = res.data.data;
            this.dialogFormVisible4Edit = true;
        }else{
            this.$message.error(res.data.msg);
        }
    });
}

修改handleEdit方法

handleEdit() {
    //发送ajax请求
    axios.put("/books",this.formData).then((res)=>{
        //如果操作成功,关闭弹层,显示数据
        if(res.data.code == 20031){
            this.dialogFormVisible4Edit = false;
            this.$message.success("修改成功");
        }else if(res.data.code == 20030){
            this.$message.error("修改失败");
        }else{
            this.$message.error(res.data.msg);
        }
    }).finally(()=>{
        this.getAll();
    });
}

至此修改功能就已经完成。

删除功能

需求:完成页面的删除功能。

  1. 找到页面的删除按钮,按钮上绑定了@click="handleDelete(scope.row)"
  2. method的handleDelete方法弹出提示框
  3. 用户点击取消,提示操作已经被取消。
  4. 用户点击确定,发送异步请求并携带需要删除数据的主键ID
  5. 根据后台返回结果做不同的操作

如果返回成功,提示成功信息,并重新查询数据

如果返回失败,提示错误信息,并重新查询数据

修改handleDelete方法

handleDelete(row) {
    //1.弹出提示框
    this.$confirm("此操作永久删除当前数据,是否继续?","提示",{
        type:'info'
    }).then(()=>{
        //2.做删除业务
        axios.delete("/books/"+row.id).then((res)=>{
            if(res.data.code == 20021){
                this.$message.success("删除成功");
            }else{
                this.$message.error("删除失败");
            }
        }).finally(()=>{
            this.getAll();
        });
    }).catch(()=>{
        //3.取消删除
        this.$message.info("取消删除操作");
    });
}

完整页面

<!DOCTYPE html>
<html>
    <head>
        <!-- 页面meta -->
        <meta charset="utf-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <title>SpringMVC案例</title>
        <meta content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no" name="viewport">
        <!-- 引入样式 -->
        <link rel="stylesheet" href="../plugins/elementui/index.css" rel="external nofollow" >
        <link rel="stylesheet" href="../plugins/font-awesome/css/font-awesome.min.css" rel="external nofollow" >
        <link rel="stylesheet" href="../css/style.css" rel="external nofollow" >
    </head>
    <body class="hold-transition">
        <div id="app">
            <div class="content-header">
                <h1>图书管理</h1>
            </div>
            <div class="app-container">
                <div class="box">
                    <div class="filter-container">
                        <el-input placeholder="图书名称" v-model="pagination.queryString" style="width: 200px;" class="filter-item"></el-input>
                        <el-button @click="getAll()" class="dalfBut">查询</el-button>
                        <el-button type="primary" class="butT" @click="handleCreate()">新建</el-button>
                    </div>
                    <el-table size="small" current-row-key="id" :data="dataList" stripe highlight-current-row>
                        <el-table-column type="index" align="center" label="序号"></el-table-column>
                        <el-table-column prop="type" label="图书类别" align="center"></el-table-column>
                        <el-table-column prop="name" label="图书名称" align="center"></el-table-column>
                        <el-table-column prop="description" label="描述" align="center"></el-table-column>
                        <el-table-column label="操作" align="center">
                            <template slot-scope="scope">
                                <el-button type="primary" size="mini" @click="handleUpdate(scope.row)">编辑</el-button>
                                <el-button type="danger" size="mini" @click="handleDelete(scope.row)">删除</el-button>
                            </template>
                        </el-table-column>
                    </el-table>
                    <!-- 新增标签弹层 -->
                    <div class="add-form">
                        <el-dialog title="新增图书" :visible.sync="dialogFormVisible">
                            <el-form ref="dataAddForm" :model="formData" :rules="rules" label-position="right" label-width="100px">
                                <el-row>
                                    <el-col :span="12">
                                        <el-form-item label="图书类别" prop="type">
                                            <el-input v-model="formData.type"/>
                                        </el-form-item>
                                    </el-col>
                                    <el-col :span="12">
                                        <el-form-item label="图书名称" prop="name">
                                            <el-input v-model="formData.name"/>
                                        </el-form-item>
                                    </el-col>
                                </el-row>
                                <el-row>
                                    <el-col :span="24">
                                        <el-form-item label="描述">
                                            <el-input v-model="formData.description" type="textarea"></el-input>
                                        </el-form-item>
                                    </el-col>
                                </el-row>
                            </el-form>
                            <div slot="footer" class="dialog-footer">
                                <el-button @click="dialogFormVisible = false">取消</el-button>
                                <el-button type="primary" @click="handleAdd()">确定</el-button>
                            </div>
                        </el-dialog>
                    </div>
                    <!-- 编辑标签弹层 -->
                    <div class="add-form">
                        <el-dialog title="编辑检查项" :visible.sync="dialogFormVisible4Edit">
                            <el-form ref="dataEditForm" :model="formData" :rules="rules" label-position="right" label-width="100px">
                                <el-row>
                                    <el-col :span="12">
                                        <el-form-item label="图书类别" prop="type">
                                            <el-input v-model="formData.type"/>
                                        </el-form-item>
                                    </el-col>
                                    <el-col :span="12">
                                        <el-form-item label="图书名称" prop="name">
                                            <el-input v-model="formData.name"/>
                                        </el-form-item>
                                    </el-col>
                                </el-row>
                                <el-row>
                                    <el-col :span="24">
                                        <el-form-item label="描述">
                                            <el-input v-model="formData.description" type="textarea"></el-input>
                                        </el-form-item>
                                    </el-col>
                                </el-row>
                            </el-form>
                            <div slot="footer" class="dialog-footer">
                                <el-button @click="dialogFormVisible4Edit = false">取消</el-button>
                                <el-button type="primary" @click="handleEdit()">确定</el-button>
                            </div>
                        </el-dialog>
                    </div>
                </div>
            </div>
        </div>
    </body>
    <!-- 引入组件库 -->
    <script src="../js/vue.js"></script>
    <script src="../plugins/elementui/index.js"></script>
    <script type="text/javascript" src="../js/jquery.min.js"></script>
    <script src="../js/axios-0.18.0.js"></script>
    <script>
        var vue = new Vue({
            el: '#app',
            data:{
                pagination: {},
				dataList: [],//当前页要展示的列表数据
                formData: {},//表单数据
                dialogFormVisible: false,//控制表单是否可见
                dialogFormVisible4Edit:false,//编辑表单是否可见
                rules: {//校验规则
                    type: [{ required: true, message: '图书类别为必填项', trigger: 'blur' }],
                    name: [{ required: true, message: '图书名称为必填项', trigger: 'blur' }]
                }
            },
            //钩子函数,VUE对象初始化完成后自动执行
            created() {
                this.getAll();
            },
            methods: {
                //列表
                getAll() {
                    //发送ajax请求
                    axios.get("/books").then((res)=>{
                        this.dataList = res.data.data;
                    });
                },
                //弹出添加窗口
                handleCreate() {
                    this.dialogFormVisible = true;
                    this.resetForm();
                },
                //重置表单
                resetForm() {
                    this.formData = {};
                },
                //添加
                handleAdd () {
                    //发送ajax请求
                    axios.post("/books",this.formData).then((res)=>{
                        console.log(res.data);
                        //如果操作成功,关闭弹层,显示数据
                        if(res.data.code == 20011){
                            this.dialogFormVisible = false;
                            this.$message.success("添加成功");
                        }else if(res.data.code == 20010){
                            this.$message.error("添加失败");
                        }else{
                            this.$message.error(res.data.msg);
                        }
                    }).finally(()=>{
                        this.getAll();
                    });
                },
                //弹出编辑窗口
                handleUpdate(row) {
                    // console.log(row);   //row.id 查询条件
                    //查询数据,根据id查询
                    axios.get("/books/"+row.id).then((res)=>{
                        // console.log(res.data.data);
                        if(res.data.code == 20041){
                            //展示弹层,加载数据
                            this.formData = res.data.data;
                            this.dialogFormVisible4Edit = true;
                        }else{
                            this.$message.error(res.data.msg);
                        }
                    });
                },
                //编辑
                handleEdit() {
                    //发送ajax请求
                    axios.put("/books",this.formData).then((res)=>{
                        //如果操作成功,关闭弹层,显示数据
                        if(res.data.code == 20031){
                            this.dialogFormVisible4Edit = false;
                            this.$message.success("修改成功");
                        }else if(res.data.code == 20030){
                            this.$message.error("修改失败");
                        }else{
                            this.$message.error(res.data.msg);
                        }
                    }).finally(()=>{
                        this.getAll();
                    });
                },
                // 删除
                handleDelete(row) {
                    //1.弹出提示框
                    this.$confirm("此操作永久删除当前数据,是否继续?","提示",{
                        type:'info'
                    }).then(()=>{
                        //2.做删除业务
                        axios.delete("/books/"+row.id).then((res)=>{
                            if(res.data.code == 20021){
                                this.$message.success("删除成功");
                            }else{
                                this.$message.error("删除失败");
                            }
                        }).finally(()=>{
                            this.getAll();
                        });
                    }).catch(()=>{
                        //3.取消删除
                        this.$message.info("取消删除操作");
                    });
                }
            }
        })
    </script>
</html>

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