BUI+Spring+Mybatis示例源码

package com.jys.myBatisSpring.controller; import com.jys.myBatisSpring.entity.User; import com.jys.myBatisSpring.service.UserService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.*; import java.util.HashMap; import java.util.List; import java.util.Map; /** * Created by anyx on 14-1-21. 补充知识: Spring 3.X系列增加了新注解@ResponseBody，@RequestBody 作为@RequestBody和@ResponseBody, Spring使用HttpMessageConverter在request流和response流之间转换. @RequestBody RequestMappingHandlerAdapter适配器使用合适的HttpMessageConverter转换器,将HTTP请求正文转换为对应的方法参数。 @ResponseBody RequestMappingHandlerAdapter适配器使用合适的HttpMessageConverter转换器,将要返回的内容或对象进行转换。 使用自动转换器HttpMessageConverter，需要开启<mvc:annotation-driven />。 AnnotationMethodHandlerAdapter将会初始化如下的转换器: 在@RequestMapping或@ExceptionHandler方法里,HttpMessageConverter转换器支持@RequestBody标注的方法参数 and @ResponseBody标注的方法返回值的转换 . 完整的HttpMessageConverters转换器列表如下,由mvc:annotation-driven开启: ByteArrayHttpMessageConverter converts byte arrays. StringHttpMessageConverter converts strings. ResourceHttpMessageConverter converts to/from org.springframework.core.io.Resource for all media types. SourceHttpMessageConverter converts to/from a javax.xml.transform.Source. FormHttpMessageConverter converts form data to/from a MultiValueMap<String, String>. Jaxb2RootElementHttpMessageConverter converts Java objects to/from XML — added if JAXB2 is present on the classpath. MappingJackson2HttpMessageConverter (or MappingJacksonHttpMessageConverter) converts to/from JSON — added if Jackson 2 (or Jackson) is present on the classpath. AtomFeedHttpMessageConverter converts Atom feeds — added if Rome is present on the classpath. RssChannelHttpMessageConverter converts RSS feeds — added if Rome is present on the classpath. */ @Controller public class UserController { @Autowired /*自动装配*/ public UserService userService; @RequestMapping(value="/user/list.action",method = RequestMethod.POST) @ResponseBody public Map<String, Object> list() { List<User> listUser = this.userService.selectUser(null); Map<String, Object> map = new HashMap<String, Object>(); if (listUser.size() >= 0) { map.put("hasError", "false"); map.put("results", listUser.size()); map.put("rows", listUser); }else{ map.put("hasError", "true"); map.put("results", "0"); map.put("rows", null); map.put("error", "控制器取数据出错"); } /*@ResponseBody将内容或对象作为HTTP响应正文返回,它会调用适合HttpMessageConverter的Adapter转换对象,写入输出流*/ /*HttpMessageConverter的Adapter对Map转换时,默认调用MappingJacksonHttpMessageConverter进行转换*/ /*从名称可以看出SpringMVC中,Map默认由Jackson进行转换(需要引入额外的Jackson包)*/ return map; } /*@PathVariable方式接收客户端传参*/ /*@PathVariable绑定方法参数到客户端传递过来的URL对应参数上*/ /*适合客户端传递的参数较少,又不怕把传入参数暴露给url的情况*/ @RequestMapping(value="/user/ins/{id1}/{name1}/pathVariable.action",method = RequestMethod.GET) @ResponseBody public Map<String, Object> insertUserPathVariable(@PathVariable String id1, @PathVariable String name1) { /*可以看出,如果User对象有很多属性时,这种方法不适用*/ User user = new User(); user.setId1(Integer.parseInt(id1)); user.setName1(name1); this.userService.insertUser(user); List<User> listUser = this.userService.selectUser(null); Map<String, Object> map = new HashMap<String, Object>(); if (listUser.size() >= 0) { map.put("hasError", "false"); map.put("results", listUser.size()); map.put("rows", listUser); }else{ map.put("hasError", "true"); map.put("results", "0"); map.put("rows", null); map.put("error", "控制器取数据出错"); } return map; } /*@RequestParam方式接收客户端传参,客户端必须采用GET方式提交*/ /*@RequestParam绑定方法参数到客户端传递过来的对应参数上*/ /*适合客户端传递的参数较少的情况*/ @RequestMapping(value="/user/ins/requestParam.action",method = RequestMethod.GET) @ResponseBody public Map<String, Object> insertUserRequestParam(@RequestParam String id1, @RequestParam String name1) { /*同样,如果User对象有很多属性时,这种方法也不适用*/ User user = new User(); user.setId1(Integer.parseInt(id1)); user.setName1(name1); this.userService.insertUser(user); List<User> listUser = this.userService.selectUser(null); Map<String, Object> map = new HashMap<String, Object>(); if (listUser.size() >= 0) { map.put("hasError", "false"); map.put("results", listUser.size()); map.put("rows", listUser); }else{ map.put("hasError", "true"); map.put("results", "0"); map.put("rows", null); map.put("error", "控制器取数据出错"); } return map; } /*[推荐]*/ /*@RequestBody方式接收客户端传参*/ /*@RequestBody把客户端传递过来的JSON格式参数采用合适的转换器装配到User对象中*/ /*适合客户端传递的参数较多*/ @RequestMapping(value="/user/ins/requestBody.action",method = RequestMethod.POST) @ResponseBody public Map<String, Object> insertUserRequestBody(@RequestBody User user) { /*@ResponseBody适合User对象有很多属性的情况*/ this.userService.insertUser(user); List<User> listUser = this.userService.selectUser(null); Map<String, Object> map = new HashMap<String, Object>(); if (listUser.size() >= 0) { map.put("hasError", "false"); map.put("results", listUser.size()); map.put("rows", listUser); }else{ map.put("hasError", "true"); map.put("results", "0"); map.put("rows", null); map.put("error", "控制器取数据出错"); } return map; } /*通过id查询,不适合使用RequestBody方式接收客户端传参,采用@RequestParam更适合*/ @RequestMapping(value = "/user/findById.action",method = RequestMethod.GET) @ResponseBody public Map<String,Object> findUser(@RequestParam String id1) { Map<String, Object> map = new HashMap<String, Object>(); if( id1 !="" || id1 !="0") { User user=new User(); user.setId1(Integer.parseInt(id1)); List<User> listUser = this.userService.selectUser(user); if (listUser.size() >= 0) { map.put("hasError", "false"); map.put("results", listUser.size()); map.put("rows", listUser); }else{ map.put("hasError", "true"); map.put("results", "0"); map.put("rows", null); map.put("error", "控制器取数据出错"); } }else{ map.put("hasError", "true"); map.put("results", "0"); map.put("rows", null); map.put("error", "控制器取数据出错");