Lenient JSON deserialization

1 files changed, 42 insertions, 0 deletions

diff --git a/src/main/java/com/juick/config/JacksonConfig.java b/src/main/java/com/juick/config/JacksonConfig.java
new file mode 100644
index 00000000..bcffeae3
--- /dev/null
+++ b/src/main/java/com/juick/config/JacksonConfig.java
@@ -0,0 +1,42 @@
+package com.juick.config;
+
+import java.io.IOException;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import com.fasterxml.jackson.databind.DeserializationContext;
+import com.fasterxml.jackson.databind.deser.DeserializationProblemHandler;
+import com.fasterxml.jackson.databind.module.SimpleModule;
+
+@Configuration
+public class JacksonConfig {
+    Logger logger = LoggerFactory.getLogger("JSON");
+
+    @Bean
+    com.fasterxml.jackson.databind.Module lenientDeserializationModule() {
+        return new SimpleModule() {
+            @Override
+            public void setupModule(SetupContext context) {
+                super.setupModule(context);
+                context.addDeserializationProblemHandler(new DeserializationProblemHandler() {
+                    @Override
+                    public Object handleWeirdStringValue(DeserializationContext ctxt, Class<?> targetType,
+                            String valueToConvert, String failureMsg) throws IOException {
+                        logger.info("invalid string value '{}': {}", valueToConvert, failureMsg);
+                        return null;
+                    }
+
+                    @Override
+                    public Object handleWeirdNumberValue(DeserializationContext ctxt, Class<?> targetType,
+                            Number valueToConvert, String failureMsg) throws IOException {
+                        logger.info("invalid number value '{}': {}", valueToConvert, failureMsg);
+                        return null;
+                    }
+                });
+            }
+        };
+    }
+}