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@@ -0,0 +1,95 @@
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+package com.qmth.exam.reserve.util;
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+
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+import com.fasterxml.jackson.databind.DeserializationFeature;
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+import com.fasterxml.jackson.databind.JavaType;
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+import com.fasterxml.jackson.databind.JsonNode;
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+import com.fasterxml.jackson.databind.ObjectMapper;
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+import com.qmth.boot.core.exception.StatusException;
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+import org.apache.commons.lang3.StringUtils;
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+import org.slf4j.Logger;
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+import org.slf4j.LoggerFactory;
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+
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+import java.util.HashMap;
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+import java.util.List;
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+import java.util.Map;
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+
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+public class JsonHelper {
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+
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+ private static final Logger log = LoggerFactory.getLogger(JsonHelper.class);
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+
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+ public static String toJson(Object object) {
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+ if (object == null) {
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+ return null;
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+ }
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+
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+ try {
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+ ObjectMapper mapper = new ObjectMapper();
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+ mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
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+ return mapper.writeValueAsString(object);
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+ } catch (Exception e) {
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+ log.error(e.getMessage());
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+ throw new StatusException("转换JSON失败!", e);
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+ }
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+ }
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+
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+ public static <T> T toObj(String jsonStr, Class<T> clazz) {
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+ if (StringUtils.isEmpty(jsonStr)) {
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+ return null;
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+ }
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+
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+ try {
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+ ObjectMapper mapper = new ObjectMapper();
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+ mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
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+ return mapper.readValue(jsonStr, clazz);
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+ } catch (Exception e) {
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+ log.error("JSON:{} ERR:{}", jsonStr, e.getMessage());
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+ throw new StatusException("JSON解析失败!", e);
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+ }
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+ }
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+
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+ public static <T> List<T> toList(String jsonStr, Class<T> clazz) {
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+ if (StringUtils.isEmpty(jsonStr)) {
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+ return null;
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+ }
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+
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+ try {
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+ ObjectMapper mapper = new ObjectMapper();
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+ mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
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+ JavaType javaType = mapper.getTypeFactory().constructCollectionType(List.class, clazz);
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+ return mapper.readValue(jsonStr, javaType);
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+ } catch (Exception e) {
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+ log.error("JSON:{} ERR:{}", jsonStr, e.getMessage());
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+ throw new StatusException("JSON解析失败!", e);
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+ }
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+ }
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+
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+ public static <T> Map<String, T> toMap(String jsonStr, Class<T> clazz) {
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+ if (StringUtils.isEmpty(jsonStr)) {
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+ return null;
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+ }
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+
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+ try {
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+ ObjectMapper mapper = new ObjectMapper();
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+ JavaType javaType = mapper.getTypeFactory().constructMapType(HashMap.class, String.class, clazz);
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+ return mapper.readValue(jsonStr, javaType);
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+ } catch (Exception e) {
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+ log.error("JSON:{} ERR:{}", jsonStr, e.getMessage());
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+ throw new StatusException("JSON解析失败!", e);
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+ }
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+ }
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+
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+ public static JsonNode getNode(String jsonStr) {
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+ if (StringUtils.isEmpty(jsonStr)) {
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+ return null;
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+ }
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+
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+ try {
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+ ObjectMapper mapper = new ObjectMapper();
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+ return mapper.readTree(jsonStr);
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+ } catch (Exception e) {
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+ log.error("JSON:{} ERR:{}", jsonStr, e.getMessage());
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+ throw new StatusException("JSON解析失败!", e);
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+ }
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+ }
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+
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+}
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