一、开发介绍

1.1 开发环境

• 开发语言：Python

• 数据库：MySQL

• 系统架构：B/S

• 后端：Django

• 前端：Vue+HTML+CSS+JavaScript+jQuery

• 工具：PyCharm

二、系统介绍

2.1图片展示

注册登录页面：

前台页面功能：首页、需求通告、优质案列、帮助中心、意见反馈、个人中心、后台管理、在线咨询

管理员后台模块：
功能：首页、个人中心、用户管理、商家管理、普通管理员管理、需求通告管理、接单信息管理、优质案例管理、申请信息管理、社区公告管理、领域类型管理、意见反馈、系统管理

用户后台模块：
功能：首页、个人中心、接单信息管理、申请信息管理

商家后台模块功能：首页、个人中心、需求通告管理、接单信息管理

普通管理员后台模块功能：首页、个人中心、需求通告管理、优质案例管理、申请信息管理、社区公告管理

三、部分代码设计

3.1.Mybatis-Plus工具类-部分代码如下：

/*** Mybatis-Plus工具类*/
public class MPUtil {public static final char UNDERLINE = '_';//mybatis plus allEQ 表达式转换public static Map allEQMapPre(Object bean,String pre) {Map map =BeanUtil.beanToMap(bean);return camelToUnderlineMap(map,pre);}//mybatis plus allEQ 表达式转换public static Map allEQMap(Object bean) {Map map =BeanUtil.beanToMap(bean);return camelToUnderlineMap(map,"");}public static Wrapper allLikePre(Wrapper wrapper,Object bean,String pre) {Map map =BeanUtil.beanToMap(bean);Map result = camelToUnderlineMap(map,pre);return genLike(wrapper,result);}public static Wrapper allLike(Wrapper wrapper,Object bean) {Map result = BeanUtil.beanToMap(bean, true, true);			 return genLike(wrapper,result);}public static Wrapper genLike( Wrapper wrapper,Map param) {Iterator> it = param.entrySet().iterator();int i=0;while (it.hasNext()) {if(i>0) wrapper.and();Map.Entry entry = it.next();String key = entry.getKey();String value = (String) entry.getValue();wrapper.like(key, value);i++;}return wrapper;}public static Wrapper likeOrEq(Wrapper wrapper,Object bean) {Map result = BeanUtil.beanToMap(bean, true, true);			 return genLikeOrEq(wrapper,result);}public static Wrapper genLikeOrEq( Wrapper wrapper,Map param) {Iterator> it = param.entrySet().iterator();int i=0;while (it.hasNext()) {if(i>0) wrapper.and();Map.Entry entry = it.next();String key = entry.getKey();if(entry.getValue().toString().contains("%")) {wrapper.like(key, entry.getValue().toString().replace("%", ""));} else {wrapper.eq(key, entry.getValue());}i++;}return wrapper;}public static Wrapper allEq(Wrapper wrapper,Object bean) {Map result = BeanUtil.beanToMap(bean, true, true);			 return genEq(wrapper,result);}public static Wrapper genEq( Wrapper wrapper,Map param) {Iterator> it = param.entrySet().iterator();int i=0;while (it.hasNext()) {if(i>0) wrapper.and();Map.Entry entry = it.next();String key = entry.getKey();wrapper.eq(key, entry.getValue());i++;}return wrapper;}public static Wrapper between(Wrapper wrapper,Map params) {for(String key : params.keySet()) {String columnName = "";if(key.endsWith("_start")) {columnName = key.substring(0, key.indexOf("_start"));if(StringUtils.isNotBlank(params.get(key).toString())) {wrapper.ge(columnName, params.get(key));}}if(key.endsWith("_end")) {columnName = key.substring(0, key.indexOf("_end"));if(StringUtils.isNotBlank(params.get(key).toString())) {wrapper.le(columnName, params.get(key));}}}return wrapper;}public static Wrapper sort(Wrapper wrapper,Map params) {String order = "";if(params.get("order") != null && StringUtils.isNotBlank(params.get("order").toString())) {order = params.get("order").toString();}if(params.get("sort") != null && StringUtils.isNotBlank(params.get("sort").toString())) {if(order.equalsIgnoreCase("desc")) {wrapper.orderDesc(Arrays.asList(params.get("sort")));} else {wrapper.orderAsc(Arrays.asList(params.get("sort")));}}return wrapper;}/*** 驼峰格式字符串转换为下划线格式字符串* * @param param* @return*/public static String camelToUnderline(String param) {if (param == null || "".equals(param.trim())) {return "";}int len = param.length();StringBuilder sb = new StringBuilder(len);for (int i = 0; i < len; i++) {char c = param.charAt(i);if (Character.isUpperCase(c)) {sb.append(UNDERLINE);sb.append(Character.toLowerCase(c));} else {sb.append(c);}}return sb.toString();}public static void main(String[] ages) {System.out.println(camelToUnderline("ABCddfANM"));}public static Map camelToUnderlineMap(Map param, String pre) {Map newMap = new HashMap();Iterator> it = param.entrySet().iterator();while (it.hasNext()) {Map.Entry entry = it.next();String key = entry.getKey();String newKey = camelToUnderline(key);if (pre.endsWith(".")) {newMap.put(pre + newKey, entry.getValue());} else if (StringUtils.isEmpty(pre)) {newMap.put(newKey, entry.getValue());} else {newMap.put(pre + "." + newKey, entry.getValue());}}return newMap;}
}

3.2.校验工具类-部分代码如下：

/*** hibernate-validator校验工具类*/
public class ValidatorUtils {private static Validator validator;static {validator = Validation.buildDefaultValidatorFactory().getValidator();}/*** 校验对象* @param object        待校验对象* @param groups        待校验的组* @throws EIException  校验不通过，则报EIException异常*/public static void validateEntity(Object object, Class... groups)throws EIException {Set> constraintViolations = validator.validate(object, groups);if (!constraintViolations.isEmpty()) {ConstraintViolation