1.maven部分jar包下載不到捐韩，要看看是不是springboot版本問(wèn)題退唠，可以在pom.xml文件更改版本試試。

   <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.6.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

2.pom.xml中java版本為1.7時(shí)荤胁，需要添加配置編譯插件瞧预。

   <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.7</java.version>
    </properties>

添加編譯插件

     <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
           <configuration>
            <source>1.7</source>
            <target>1.7</target>
           </configuration>
     </plugin>

3.谷歌json字符串序列化和反序列化工具類

     <dependency>
       <groupId>com.google.code.gson</groupId>
       <artifactId>gson</artifactId>
       <version>2.8.2</version>
     </dependency>

用法如下
對(duì)象序列化為json字符串

...
String data = new Gson().toJson(appgpsBean);
...

json字符串反序列化為對(duì)象

...
 List<HPMCameraBean> tempList = new Gson().fromJson(data,new TypeToken<List<HPMCameraBean>>(){}.getType());
...

4.解決跨域訪問(wèn)攔截器

/**
 *   攔截器
 * Created by lin on 2017/8/21.
 */
public class AccessInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o) throws Exception {
        //解決跨域請(qǐng)求
      if(httpServletResponse!=null){
          httpServletResponse.addHeader("Access-Control-Allow-Origin", "*");
          httpServletResponse.addHeader("Access-Control-Allow-Methods", "get, post, put, delete, options");
          httpServletResponse.addHeader("Access-Control-Allow-Headers", "origin, content-type, accept");
          httpServletResponse.addHeader("Access-Control-Allow-Credentials", "true");
      }
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {
    }

    @Override
    public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {
    }

5.WebMvcConfigurerAdapter類應(yīng)用(重要)

WebMvcConfigurerAdapter配置類其實(shí)是Spring內(nèi)部的一種配置方式，采用JavaBean的形式來(lái)代替?zhèn)鹘y(tǒng)的xml配置文件形式進(jìn)行針對(duì)框架個(gè)性化定制仅政。

在配置類上添加了注解@Configuration垢油，標(biāo)明了該類是一個(gè)配置類并且會(huì)將該類作為一個(gè)SpringBean添加到IOC容器內(nèi)。

@Configuration
public class MyWebMvcConfigurerAdapter extends WebMvcConfigurerAdapter {
   @Value("${tokenEnabled}")
   Boolean tokenEnabled;
    @Value("${uploadFilePath}")
    String uploadFilePath;

   @Bean
   public TokenInterceptor getTokenInterceptor(){
       return new TokenInterceptor();
   }

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new AccessInterceptor()).addPathPatterns("/**");
        if(tokenEnabled)
            registry.addInterceptor(getTokenInterceptor())
                    .addPathPatterns("/**")
                    .excludePathPatterns("/","/user/login","/images/**","/expand/getLatestVersion","/test/**","/APBS/error");
        super.addInterceptors(registry);
    }
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        //addResourceHandler是指你想在url請(qǐng)求的路徑
        //addResourceLocations是圖片存放的真實(shí)路徑
        registry.addResourceHandler("/images/**").addResourceLocations("file:"+uploadFilePath);
        super.addResourceHandlers(registry);
    }
}

6.全局異常處理

業(yè)務(wù)異常類

/**
 * Created by lin on 2017/10/20.
 * 實(shí)際業(yè)務(wù)異常
 */
public class BusinessException extends RuntimeException{
    private int code=-1;

    public BusinessException(String message, int code) {
        super(message);
        this.code = code;
    }

    public BusinessException(String message) {
        super(message);
    }

    public int getCode() {
        return code;
    }

    public void setCode(int code) {
        this.code = code;
    }
}

異常處理器

/**
 * 異常處理器圆丹，捕獲所有異常滩愁，并按照統(tǒng)一格式返回
 * Created by lin on 2017/8/21.
 */
@ControllerAdvice
public class ExceptionHandler {
    Logger logger = LoggerFactory.getLogger(ExceptionHandler.class);

    @org.springframework.web.bind.annotation.ExceptionHandler(Exception.class)
    @ResponseBody
    public Result handleException(HttpServletRequest request, Exception e) {

        logger.error("系統(tǒng)異常: RequestURI=" +request.getRequestURL()) ;
        logger.error("系統(tǒng)異常:" +e.toString());
        logger.error("系統(tǒng)異常:" +e.getMessage(),e);
        e.printStackTrace();
        if (e instanceof HttpRequestMethodNotSupportedException) {
            return ResultUtil.error(ErrorCode.REQUEST_METHOD_ERROR.getValue(), "HttpRequestMethodNotSupportedException:請(qǐng)求方式(Get/Post)錯(cuò)誤");
        }
        if (e instanceof MissingServletRequestParameterException) {
            return ResultUtil.error(ErrorCode.MISSING_PARAMETERS.getValue(),"MissingServletRequestParameterException: 缺少參數(shù)");
        }
        if (e instanceof MethodArgumentTypeMismatchException) {
            return ResultUtil.error(ErrorCode.INVALID_PARAMETERS.getValue(),"MethodArgumentTypeMismatchException:參數(shù)類型錯(cuò)誤");
        }
       if (e instanceof BusinessException) {

            if(e.getMessage() == "token missing")
            {
                return ResultUtil.error(ErrorCode.TOKEN_MISSING.getValue(),e.getMessage());
            }
            else
                if(e.getMessage() == "token incorrect or expired")
                {
                    return ResultUtil.error(ErrorCode.TOKEN_OVERTIME.getValue(),e.getMessage());
                }
            return ResultUtil.error(e.getMessage());
        }

        return ResultUtil.error(ErrorCode.FAILED.getValue(),"系統(tǒng)異常" );
    }
}

拋出業(yè)務(wù)異常

   @Override
    public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o) throws Exception {
       String token="" ;
        try {
            token = httpServletRequest.getParameter("token");
        }catch (Exception e){
            throw new BusinessException("token missing");
        }
        if (tokenService.verifyToken(token)) {
            logger.warn(">>>>>>>>>>>>>>>>>token：" + token + "\t 在攔截器驗(yàn)證成功>>>>>>>>>>>>>>>>>>");
            return true;// 只有返回true才會(huì)繼續(xù)向下執(zhí)行，返回false取消當(dāng)前請(qǐng)求 3c3d2eacb5d0435c9918f4c1eac50f0f
        } else {
            String url = httpServletRequest.getRequestURI();
            logger.warn(">>>>>>>>>>>>>>>>>token：" + token + "\t 在攔截器驗(yàn)證失敗>>>>>>>>>>>>>>>>>>");
            logger.warn(">>>>>>>>>>>>>>>>>驗(yàn)證失敗url:" + url);
            throw new BusinessException("token incorrect or expired");
        }

    }

7.統(tǒng)一接口返回格式

分頁(yè)數(shù)據(jù)格式類

/**
 * Created by lin on 2017/8/15.
 */
public class PageData <M> implements Serializable {

    private static final long serialVersionUID = 1L;
    private Integer currentPage;// 當(dāng)前頁(yè)數(shù)
    private Integer pageSize;// 每頁(yè)的大小
    private Long total;// 數(shù)據(jù)總條數(shù)
    private List<M> rows;// 當(dāng)前頁(yè)的數(shù)據(jù)

    public PageData(List<M> rows, Long total, Integer pageSize,
                    Integer currentPage) {
        this.total = total;
        this.rows = rows;
        this.pageSize = pageSize;
        this.currentPage = currentPage;
    }

    public Integer getCurrentPage() {
        return currentPage;
    }

    public void setCurrentPage(Integer currentPage) {
        this.currentPage = currentPage;
    }

    public Integer getPageSize() {
        return pageSize;
    }

    public void setPageSize(Integer pageSize) {
        this.pageSize = pageSize;
    }

    public Long getTotal() {
        return total;
    }

    public void setTotal(Long total) {
        this.total = total;
    }

    public List<M> getRows() {
        return rows;
    }

    public void setRows(List<M> rows) {
        this.rows = rows;
    }

}

統(tǒng)一結(jié)果數(shù)據(jù)格式類

/**
 * Created by lin on 2017/8/15.
 */
public class Result implements Serializable {
    Integer code;
    String msg;
    Object data;

    public Integer getCode() {
        return code;
    }

    public void setCode(Integer code) {
        this.code = code;
    }

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }

    public Object getData() {
        return data;
    }

    public void setData(Object data) {
        this.data = data;
    }
}

統(tǒng)一結(jié)果數(shù)據(jù)格式工具類

/**
 * Created by lin on 2017/8/15.
 */
public class ResultUtil {

    public static Result success(){
        Result result=new Result();
        result.setCode(0);
        result.setMsg("success");
        return result;
    }

    public static Result success(Object o){
        Result result=new Result();
        result.setCode(0);
        result.setMsg("success");
        result.setData(o);
        return result;
    }
    public static Result error(){
        Result result=new Result();
        result.setCode(-1);
        result.setMsg("error");
        return result;
    }
    public static Result error(String msg){
        Result result=new Result();
        result.setCode(-1);
        result.setMsg(msg);
        return result;
    }

    public static Result error(Integer code, String msg){
        Result result=new Result();
        result.setCode(code);
        result.setMsg(msg);
        return result;
    }
}

用法

        Result result;
        long size = cameraList.size();
        PageData<HPMCameraBean> resultata = new PageData<HPMCameraBean>(cameraList, size, pagesize, page);
        result = ResultUtil.success(resultata);