day02 - ToB企服应用市场:ToB评测及商务社交产业平台

@ServletComponentScan注解

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[/code][code]/**
* 检查用户是否已经完成登录
* @author ccchai
* @create 2022-06-24 11:02
*/
@Slf4j
@WebFilter(filterName = "loginCheckFilter",urlPatterns = "/*")
public class LoginCheckFilter implements Filter {
//路径匹配器，支持通配符
public static final AntPathMatcher PATH_MATCHER = new AntPathMatcher();
@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest) servletRequest;
HttpServletResponse response = (HttpServletResponse) servletResponse;
//1.获取本次请求的URI
String requestURI = request.getRequestURI();
log.info("本次请求的路径为{}",requestURI);
//定义不需要处理的请求路径
String[] urls = new String[]{
"/employee/login",
"/employee/logout",
"/backend/**",
"/front/**"
};
//2.判断本次请求是否需要处理
boolean check = check(urls, requestURI);
//3.如果不需要处理，则直接放行
if (check){
log.info("本次请求{}不需要处理",requestURI);
filterChain.doFilter(request, response);
return;
}
//4.判断登录状态，如果已登录，则直接放行
if ((request.getSession().getAttribute("employee"))!=null){
log.info("用户已登录，id为{}",request.getSession().getAttribute("employee"));
filterChain.doFilter(request, response);
return;
}
//5.如果未登录则返回未登录结果,通过输出流方式向客户端页面响应数据
log.info("用户未登录");
response.getWriter().write(JSON.toJSONString(R.error("NOTLOGIN")));
return;
}
/**
* 路径匹配，检查本次请求是否需要放行
* @param urls
* @param requestURI
* @return
*/
public boolean check(String[] urls,String requestURI){
for (String url : urls) {
boolean match = PATH_MATCHER.match(url, requestURI);
if (match){
return true;
}
}
return false;
}
}

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@ControllerAdvice(annotations = {RestController.class, Controller.class})
@ResponseBody
@Slf4j
public class GlobalExceptionHandler {
/**
* 异常处理方法
* @param ex
* @return
*/
@ExceptionHandler(SQLIntegrityConstraintViolationException.class)
public R<String> exceptionHandler(SQLIntegrityConstraintViolationException ex){
log.error(ex.getMessage());
if(ex.getMessage().contains("Duplicate entry")){
String[] split = ex.getMessage().split(" ");
return R.error(split[2]+"已存在");
}
return R.error("未知错误");
}
}

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/**
* 配置MybatisPlus的分页插件
* @author ccchai
* @create 2022-06-24 17:08
*/
@Configuration
public class MyBatisPlusConfig {
@Bean
public MybatisPlusInterceptor mybatisPlusInterceptor(){
MybatisPlusInterceptor mybatisPlusInterceptor = new MybatisPlusInterceptor();
mybatisPlusInterceptor.addInnerInterceptor(new PaginationInnerInterceptor());
return mybatisPlusInterceptor;
}
}

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/**
* 员工信息分页查询
* @param page
* @param pageSize
* @param name
* @return
*/
@GetMapping("/page")
public R<Page> page(int page,int pageSize,String name){
log.info("page = {},pageSize = {},name = {}",page,pageSize,name);
//构造分页构造器
Page pageInfo = new Page(page,pageSize);
//构造条件构造器
LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
//添加过滤条件
queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);
//添加排序条件
queryWrapper.orderByDesc(Employee::getUpdateTime);
//执行查询
employeeService.page(pageInfo, queryWrapper);
return R.success(pageInfo);
}

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/**
* 对象映射器:基于jackson将Java对象转为json，或者将json转为Java对象
* 将JSON解析为Java对象的过程称为 [从JSON反序列化Java对象]
* 从Java对象生成JSON的过程称为 [序列化Java对象到JSON]
*/
public class JacksonObjectMapper extends ObjectMapper {
public static final String DEFAULT_DATE_FORMAT = "yyyy-MM-dd";
public static final String DEFAULT_DATE_TIME_FORMAT = "yyyy-MM-dd HH:mm:ss";
public static final String DEFAULT_TIME_FORMAT = "HH:mm:ss";
public JacksonObjectMapper() {
super();
//收到未知属性时不报异常
this.configure(FAIL_ON_UNKNOWN_PROPERTIES, false);
//反序列化时，属性不存在的兼容处理
this.getDeserializationConfig().withoutFeatures(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
SimpleModule simpleModule = new SimpleModule()
.addDeserializer(LocalDateTime.class, new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_TIME_FORMAT)))
.addDeserializer(LocalDate.class, new LocalDateDeserializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_FORMAT)))
.addDeserializer(LocalTime.class, new LocalTimeDeserializer(DateTimeFormatter.ofPattern(DEFAULT_TIME_FORMAT)))
.addSerializer(BigInteger.class, ToStringSerializer.instance)
.addSerializer(Long.class, ToStringSerializer.instance)
.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_TIME_FORMAT)))
.addSerializer(LocalDate.class, new LocalDateSerializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_FORMAT)))
.addSerializer(LocalTime.class, new LocalTimeSerializer(DateTimeFormatter.ofPattern(DEFAULT_TIME_FORMAT)));
//注册功能模块例如，可以添加自定义序列化器和反序列化器
this.registerModule(simpleModule);
}
}

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