springmvc的jar包及案例

package com.itcast.control; import java.io.File; import java.io.IOException; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.Date; import java.util.List; import java.util.Map; import javax.annotation.Resource; import javax.validation.Valid; import org.apache.commons.io.FileUtils; import org.springframework.beans.propertyeditors.CustomDateEditor; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.validation.BindingResult; import org.springframework.web.bind.WebDataBinder; import org.springframework.web.bind.annotation.InitBinder; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.multipart.MultipartFile; import cn.itcast.com.domain.Customer; import cn.itcast.service.CustomerService; @Controller public class CustomerContoller { @Resource CustomerService customerService; /*显示所有内存数据库*/ @RequestMapping("/customer/list.action") public String listAll(Map<String, Object> model){ List<Customer> customers = customerService.ListCustomerAll(); model.put("list", customers);//SpringMvc会在专向之前，放入setAttribute当中 return "customer/listCustomer"; } /*新增数据页面*/ @RequestMapping("/customer/create.action") public String creatCusomer(){ return "customer/createCustomer"; } /*AddCustomer*/ //HttpServletRequest request：用这个方法也可以，但是就达不到我们springmvc的强大了 //用参数的形式，就想struts2自动封装机制了，相同的参数名，自动转化基本类型 /* * 现今流行开发范式，约定，在开发时，定了很多规矩； * springmvc 通过页面提交request，request当中获取getParamter方法获得页面中的用户输入的内容。 * 它通过变量request中获得的这些参数，找转入的方法中有没有匹配的setXxx方法，例如页面中有一个name * 找方法setName，将用户填写的内容设置进去，同时，springmvc能得到参数的类型，进行强转。 */ /*还有一个最强大的地方在，它跟struts一样运用实体类进行封装。*/ @RequestMapping("/customer/add.action") public String addCustomer(Customer customer){ boolean result = this.customerService.addCustomer(customer); System.out.println(result); return "redirect:/customer/list.action"; } /*public String addCustomer(String username,String password,Integer age){ Customer customer = new Customer(); customer.setUsername(username);//这就是getUsername()加进去的 customer.setPassword(password); customer.setAge(age); System.out.println(customer.toString()); boolean result = customerService.addCustomer(customer); System.out.println("结果:"+result); return "redirect:/customer/list.action";//这里就需要重定向了，有点儿类似struts2的机制了，redirect，forward }*/ @RequestMapping("/customer/toUpdate.action") public String toUpdatePage(int id,Model model){ Customer customer = this.customerService.getId(id); System.out.println("找到:"+customer.toString()); model.addAttribute("list", customer);//和setAttribute效果一样，放到域对象中了 return "customer/updateCustomer"; } @RequestMapping("/customer/AlreadyUpdate.action") public String AlreadyUpdate(@Valid Customer customer,BindingResult result,@RequestParam(required=true)MultipartFile uploadfile) throws IOException{ if(result.hasErrors()){//表示有错，返回之前页面 return "customer/updateCustomer"; }else{ System.out.println(uploadfile.toString()); /*@Valid 表示要校验的类，这里值Customer BindingResult校验结果(true or false)*/ /*上传文件后，写到磁盘咯 MultipartFile 是springmvc提供的文件上传，接收filename*/ FileUtils.writeByteArrayToFile(new File("F:\\1.jpg"), uploadfile.getBytes()); this.customerService.update(customer); return "redirect:/customer/list.action"; } } @RequestMapping("/customer/deleteId.action") public String deleteId(int id){ this.customerService.deleteId(id); return "redirect:/customer/list.action"; } @RequestMapping("/customer/deleteALL.action") public String deleteAll(@RequestParam("id")int[] id){//@RequestParam要不要都行 System.out.println(id.length); boolean result = this.customerService.deleteAll(id); System.out.println("批量删除完成:"+result); return "redirect:/customer/list.action"; } @InitBinder //此方法用于日期的转换，如果未加，当页面日期格式转换错误，将报400错误，实际是因为此方法 public void initBinder(WebDataBinder binder) { DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd"); dateFormat.setLenient(true); binder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, true)); } }