7.基于SpringBoot的SSMP整合案例-表现层开发

1.基于Restfu1进行表现层接口开发

1.1创建功能类

1.2基于Restful制作表现层接口

2.接收参数

2使用Apifox测试表现层接口功能

保存接口：

分页接口：

3.表现层一致性处理

3.1先创建一个工具类，用作后端返回格式统一类：

3.2表现层接口统一返回值类型结果：

3.3 小结：

1.基于Restfu1进行表现层接口开发

1.1创建功能类

创建一个表现层功能类BookController,位置如下图所示：

代码如下所示：

package com.summer.controller;import com.summer.domain.Book;
import com.summer.service.IBookService;
import org.springframework.web.bind.annotation.*;
import com.baomidou.mybatisplus.core.metadata.IPage;
import org.springframework.beans.factory.annotation.Autowired;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;import java.util.List;@RestController
@RequestMapping("/books")
public class BookController {@Autowiredprivate IBookService bookService;@GetMappingpublic List<Book> getAll() {return bookService.list();}@PostMappingpublic Boolean save(@RequestBody Book book) {return bookService.save(book);}@PutMappingpublic Boolean update(@RequestBody Book book) {return bookService.modify(book);}@DeleteMapping("{id}")public Boolean delete(@PathVariable Integer id) {return bookService.delete(id);}@GetMapping("{id}")public Book getById(@PathVariable Integer id) {return bookService.getById(id);}@GetMapping("{currentPage}/{pageSize}")public IPage<Book> getPage(@PathVariable Integer currentPage, @PathVariable Integer pageSize) {IPage page = new Page(currentPage, pageSize);return bookService.page(page, null);}
}

1.2基于Restful制作表现层接口

新增:POST
制除:DELETE
修改:PUT
查询:GET

2.接收参数

实体数据:@RequestBody路径变量:@PathVariable

2使用Apifox测试表现层接口功能

保存接口：

传递的数据按照Book的数据结构，通过body参数，json格式传递到后端

分页接口：

3.表现层一致性处理

设计表现层返回结果的模型类，用于后端与前端进行数据格式统一，也称为前后端数据协议

3.1先创建一个工具类，用作后端返回格式统一类：

代码如下所示：

package com.summer.controller.Utils;import lombok.Data;@Data
public class R {private Boolean flag;private Object data;public R() {}public R(Boolean flag) {this.flag = flag;}public R(Boolean flag, Object data) {this.flag = flag;this.data = data;}
}

3.2表现层接口统一返回值类型结果：

package com.summer.controller;import com.summer.controller.Utils.R;
import com.summer.domain.Book;
import com.summer.service.IBookService;
import org.springframework.web.bind.annotation.*;
import com.baomidou.mybatisplus.core.metadata.IPage;
import org.springframework.beans.factory.annotation.Autowired;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;import java.util.List;@RestController
@RequestMapping("/books")
public class BookController {@Autowiredprivate IBookService bookService;@GetMappingpublic R getAll() {return new R(true, bookService.list());}@PostMappingpublic R save(@RequestBody Book book) {return new R(bookService.save(book));}@PutMappingpublic R update(@RequestBody Book book) {return new R(bookService.modify(book));}@DeleteMapping("{id}")public R delete(@PathVariable Integer id) {return new R(bookService.delete(id));}@GetMapping("{id}")public R getById(@PathVariable Integer id) {return new R(true, bookService.getById(id));}@GetMapping("{currentPage}/{pageSize}")public R getPage(@PathVariable Integer currentPage, @PathVariable Integer pageSize) {IPage page = new Page(currentPage, pageSize);return new R(true, bookService.page(page, null));}
}