出现状况：

package com.crud.controller;import java.util.HashMap;
import java.util.List;
import java.util.Map;import javax.validation.Valid;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;import com.crud.bean.Employee;
import com.crud.bean.Msg;
import com.crud.service.EmployeeService;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;//澶勭悊鍛樺伐澧炲垹鏀规煡璇锋眰
@Controller
public class EmployeeController {@AutowiredEmployeeService employeeService;@RequestMapping(value="/emp/{id}",method=RequestMethod.GET)@ResponseBodypublic Msg getEmp(@PathVariable("id")Integer id) {Employee employee = employeeService.getEmp(id);return Msg.success().add("emp", employee);}//妫楠岀敤鎴峰悕鏄惁鍙敤@ResponseBody@RequestMapping("/checkuser")public Msg checkuser(@RequestParam("empName")String empName) {String regx = "(^[a-zA-Z0-9_-]{6,16}$)|(^[\\u2E80-\\u9FFF]{2,5})";boolean matches = empName.matches(regx);if (!matches) {return Msg.fail().add("va_msg", "鐢ㄦ埛鍚嶅繀椤绘槸瀛楁瘝鍜屾眽瀛");}//鍒ゆ柇鐢ㄦ埛鍚嶆槸鍚︽槸鍚堟硶鐨勮〃杈惧紡boolean boolean1 = employeeService.checkUser(empName);if (boolean1) {return Msg.success();}else {return Msg.fail().add("va_msg", "鐢ㄦ埛鍚嶄笉鍙敤");}}@RequestMapping(value="/emp",method=RequestMethod.POST)@ResponseBodypublic Msg saveEmp(@Valid Employee employee,BindingResult result) {if (result.hasErrors()) {//楠岃瘉澶辫触鍦ㄦā鎬佹涓樉绀轰俊鎭Map<String, Object> map = new HashMap<>();List<FieldError> errors = result.getFieldErrors();for(FieldError fieldError:errors) {System.out.println("閿欒鐨勫瓧娈靛悕锛"+fieldError.getField());System.out.println("閿欒淇℃伅"+fieldError.getDefaultMessage());map.put(fieldError.getField(), fieldError.getDefaultMessage());}return Msg.fail().add("errorFields", map);}else {employeeService.saveEmp(employee);return Msg.success();}}// 鍛樺伐鍒嗛〉鏌ヨ// @ResponseBody鑷姩灏嗗垎椤典俊鎭浆涓簀son瀛楃涓@RequestMapping("/emps")@ResponseBodypublic Msg getEmpsWhthJson(@RequestParam(value = "pn", defaultValue = "1") Integer pn, Model model) {// 寮曞叆pageHelper// 鍦ㄦ煡璇箣鍓嶅彧闇瑕佽皟鐢ㄥ涓,浼犲叆椤电爜鍜屾瘡椤电殑澶у皬PageHelper.startPage(pn, 7);List<Employee> emps = employeeService.getAll();// 鍙渶瑕佸皢pageinfo浜ょ粰椤甸潰锛屼紶鍏ヨ繛缁樉绀虹殑椤垫暟锛岄噷闈㈠皝瑁呬簡璇︾粏鐨勪俊鎭紝鍖呮嫭浜嗘垜浠煡璇㈠嚭鏉ョ殑鏁版嵁PageInfo pageInfo = new PageInfo(emps, 5);return Msg.success().add("pageInfo",pageInfo);}// 鍛樺伐鍒嗛〉鏌ヨ// @RequestMapping("/emps")public String getEmps(@RequestParam(value = "pn", defaultValue = "1") Integer pn, Model model) {// 寮曞叆pageHelper// 鍦ㄦ煡璇箣鍓嶅彧闇瑕佽皟鐢ㄥ涓,浼犲叆椤电爜鍜屾瘡椤电殑澶у皬PageHelper.startPage(pn, 7);List<Employee> emps = employeeService.getAll();// 鍙渶瑕佸皢pageinfo浜ょ粰椤甸潰锛屼紶鍏ヨ繛缁樉绀虹殑椤垫暟锛岄噷闈㈠皝瑁呬簡璇︾粏鐨勪俊鎭紝鍖呮嫭浜嗘垜浠煡璇㈠嚭鏉ョ殑鏁版嵁PageInfo pageInfo = new PageInfo(emps, 5);model.addAttribute("pageInfo", pageInfo);return "list";}
}

出现原因：

因为eclipse下默认的编码是GBK，而导入的java源文件编码是UTF－8所以，所以在在eclipse下查看就变成了乱码。

解决方法：

Eclipse默认的新项目的编码是GBK，修改eclipse的配置，可以使得eclipse的新建项目的默认编码直接为UTF-8 在菜单栏的Window->Preferences->General->Content Types,有面的Text中展开Java Source File修改下方的default encoding为UTF-8。重启eclipse