基于小程序实现天气预报微信小程序设计与实现带JAVA后台源码分享

package com.leadingsoft.liuw.utils; import com.fasterxml.jackson.annotation.JsonAutoDetect; import com.fasterxml.jackson.annotation.JsonInclude; import com.fasterxml.jackson.core.JsonParseException; import com.fasterxml.jackson.core.type.TypeReference; import com.fasterxml.jackson.databind.*; import com.fasterxml.jackson.databind.ser.PropertyFilter; import com.fasterxml.jackson.databind.ser.impl.SimpleBeanPropertyFilter; import com.fasterxml.jackson.databind.ser.impl.SimpleFilterProvider; import com.leadingsoft.liuw.exception.CustomRuntimeException; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.util.StringUtils; import java.io.IOException; import java.io.Reader; import java.text.SimpleDateFormat; import java.util.List; import java.util.Map; /** * Created by liuw on 2017/4/21. */ public class JsonUtils { private static final Logger logger = LoggerFactory.getLogger(JsonUtils.class); public static final TypeReference<Map<String, Object>> MAP_TYPE = new TypeReference() { }; private static ObjectMapper mapper = new ObjectMapper(); private static ObjectMapper filterMapper; private JsonUtils() { } public static <T> String pojoToJson(T pojo) { if(pojo == null) { return null; } else { try { String e = getMapper().writeValueAsString(pojo); return e; } catch (IOException var2) { throw new CustomRuntimeException("Failed to convert Object2JSONString. ", new Object[]{var2}); } } } public static <T> T jsonToPojo(String json, Class<T> pojoClass) { if(!StringUtils.hasText(json)) { return null; } else { try { return getMapper().readValue(json, pojoClass); } catch (IOException var3) { throw new CustomRuntimeException("Failed to convert JSONString2Object. ", new Object[]{var3}); } } } public static <T> List<T> jsonToPojoList(String json, TypeReference<List<T>> valueTypeRef) { if(!StringUtils.hasText(json)) { return null; } else { try { return (List)getMapper().readValue(json, valueTypeRef); } catch (IOException var3) { throw new CustomRuntimeException("Failed to convert JSONString2Object. ", new Object[]{var3}); } } } public static <T> T jsonToPojo(Reader src, Class<T> pojoClass) throws JsonParseException, JsonMappingException, IOException { return getMapper().readValue(src, pojoClass); } public static <T> T jsonToPojo(String json, TypeReference<T> valueTypeRef) { if(!StringUtils.hasText(json)) { return null; } else { try { return getMapper().readValue(json, valueTypeRef); } catch (IOException var3) { throw new CustomRuntimeException("Failed to convert JSONString2Object. ", new Object[]{var3}); } } } public static Map<String, Object> jsonToMap(String json) { if(!StringUtils.hasText(json)) { return null; } else { try { return (Map)getMapper().readValue(json, MAP_TYPE); } catch (IOException var2) { throw new CustomRuntimeException("Failed to convert JSONString2Map. ", new Object[]{var2}); } } } public static <T> T pojoToPojo(T sourceObject, Class<T> targetType) { return sourceObject == null?null:getMapper().convertValue(sourceObject, targetType); } public static <T> Map<String, Object> pojoToMap(T pojo) { return pojo == null?null:(Map)getMapper().convertValue(pojo, MAP_TYPE); } public static <T> Map<String, Object> pojoToMapWithSpecifiedFields(T pojo, String... fields) { String json = pojoToJsonWithSpecifiedFields(pojo, fields); return jsonToMap(json); } public static <T> Map<String, Object> pojoToMapWithFilterFields(T pojo, String... fields) { String json = pojoToJsonWithFilterFields(pojo, fields); return jsonToMap(json); } public static <T> Map<String, Object> pojoToMapWithSpecifiedFields(T pojo, String filterId, String... fields) { String json = pojoToJsonWithSpecifiedFields(pojo, filterId, fields); return jsonToMap(json); } public static <T> Map<String, Object> pojoToMapWithFilterFields(T pojo, String filterId, String... fields) { String json = pojoToJsonWithFilterFields(pojo, filterId, fields); return jsonToMap(json); } public static <T> String pojoToJsonWithSpecifiedFields(T pojo, String... fields) { return pojo == null?null:pojoToJsonWithSpecifiedFields(pojo, pojo.getClass().getName(), fields); } public static <T> String pojoToJsonWithFilterFields(T pojo, String... fields) { return pojo == null?null:pojoToJsonWithFilterFields(pojo, pojo.getClass().getName(), fields); } public static <T> String pojoToJsonWithSpecifiedFields(T pojo, String filterName, String... fields) { if(pojo == null) { return null; } else { if(StringUtils.isEmpty(filterName)) { filterName = pojo.getClass().getName(); } return pojoToJson(pojo, filterName, SimpleBeanPropertyFilter.filterOutAllExcept(fields)); } } public static <T> String pojoToJsonWithFilterFields(T pojo, String filterName, String... fields) { if(pojo == null) { return null; } else { String filter = filterName; if(StringUtils.isEmpty(filterName)) { filter = pojo.getClass().getName(); } return pojoToJson(pojo, filter, SimpleBeanPropertyFilter.serializeAllExcept(fields)); } } public static <T> Map<String, Object> pojoToMap(T pojo, PropertyFilter filter) { if(pojo == null) { return null; } else { String json = pojoToJson(pojo, pojo.getClass().getName(), filter); return jsonToMap(json); } } public static <T> Map<String, Object> pojoToMap(T pojo, String filterName, PropertyFilter filter) { if(pojo == null) { return null; } else { String json = pojoToJson(pojo, filterName, filter); return jsonToMap(json); } } public static <T> String pojoToJson(T pojo, PropertyFilter filter) { return pojo == null?null:pojoToJson(pojo, pojo.getClass().getName(), filter); } public static <T> String pojoToJson(T pojo, String filterName, PropertyFilter filter) { if(StringUtils.isEmpty(filterName)) { filterName = pojo.getClass().getName(); } SimpleFilterProvider filters = (new SimpleFilterProvider()).addFilter(filterName, filter); try { String e = getFilterMapper().writer(filters).writeValueAsString(pojo); if(logger.isDebugEnabled()) { logger.debug("pojoToJson :" + e); } return e; } catch (IOException var5) { throw new CustomRuntimeException("Failed to convert Object2JSONString. ", new Object[]{var5}); } } private static ObjectMapper getMapper() { if(mapper != null) { return mapper; } else { Class var0 = JsonUtils.class; synchronized(JsonUtils.class) { if(mapper != null) { return mapper; } else { mapper = new ObjectMapper(); mapper.setDateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")); return mapper; } } } } private static ObjectMapper getFilterMapper() { if(filterMapper != null) { return filterMapper