Json example

fishercoder1534 · fishercoder1534 · commit d1a24bf85309 · 2016-08-06T12:12:51.000-07:00
diff --git a/RandomProblems/src/sporadic/jsonExample/JsonDemoClass.java b/RandomProblems/src/sporadic/jsonExample/JsonDemoClass.java
@@ -0,0 +1,48 @@
+package sporadic.jsonExample;
+
+import org.codehaus.jackson.annotate.JsonIgnore;
+import org.codehaus.jackson.annotate.JsonIgnoreProperties;
+import org.codehaus.jackson.annotate.JsonProperty;
+import org.springframework.stereotype.Repository;
+import org.springframework.stereotype.Service;
+
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+import lombok.ToString;
+
+/**This package is to demo how @JsonIgnore and @JsonIgnorProperties and @JsonProperty work:
+ * @JsonIgnore is to annotate a field or method to make it free from being seriazlied by json
+ * @JsonIgnoreProperties is to annotate a class, and you must/may specifiy which properties you want json to skip serializing.
+ * @JsonProperty is to annotate a field and give this field a specific name when Jackson does serialization, e.g. a name.*/
+
+
+@NoArgsConstructor
+@Service
+@ToString
+@JsonIgnoreProperties({"noInterestingMember", "forgetThisField"})
+public class JsonDemoClass {
+	@Getter
+	@Setter
+	@JsonProperty("ID")
+	public long id;
+	
+	@Getter
+	@Setter
+	@JsonProperty("NAME")
+	public String name;
+	
+	@Getter
+	@Setter
+	public String noInterestingMember;
+	
+	@Getter
+	@Setter
+	@JsonIgnore
+	@JsonProperty("ANOTHER-MEMEBR")
+	public int anotherMember;
+	
+	@Getter
+	@Setter
+	public double forgetThisField;
+}
diff --git a/RandomProblems/src/sporadic/jsonExample/JsonIgnoreAnnotationDemo.java b/RandomProblems/src/sporadic/jsonExample/JsonIgnoreAnnotationDemo.java
@@ -0,0 +1,42 @@
+package sporadic.jsonExample;
+
+import java.io.IOException;
+
+import org.codehaus.jackson.map.ObjectMapper;
+import org.springframework.context.support.AbstractApplicationContext;
+import org.springframework.context.support.ClassPathXmlApplicationContext;
+
+public class JsonIgnoreAnnotationDemo {
+
+	public static void main(String... args) {
+
+		AbstractApplicationContext context = new ClassPathXmlApplicationContext(
+				"spring-configuration/json-spring-configuration.xml");
+		JsonDemoClass jsonDemoClass = (JsonDemoClass) context.getBean("jsonDemoClass");
+
+		ObjectMapper mapper = new ObjectMapper();
+
+		jsonDemoClass.setId(1);
+		jsonDemoClass.setName("Test program!");
+		jsonDemoClass.setAnotherMember(123);
+		jsonDemoClass.setForgetThisField(123.456);
+		jsonDemoClass.setNoInterestingMember("Something not interesting!");
+
+		String s = null;
+		try {
+			s = mapper.writeValueAsString(jsonDemoClass);
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+		System.out.println("String s is: " + s);
+		
+		JsonDemoClass jsonDemoClass2 = (JsonDemoClass) context.getBean("jsonDemoClass");
+		try {
+			jsonDemoClass2 = mapper.readValue(s, JsonDemoClass.class);
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+		System.out.println("jsonDemoClass2.toString() s is: " + jsonDemoClass2.toString() + "\nThe end.");
+	}
+
+}
diff --git a/RandomProblems/src/spring-configuration/json-spring-configuration.xml b/RandomProblems/src/spring-configuration/json-spring-configuration.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<beans xmlns="http://www.springframework.org/schema/beans"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xmlns:context="http://www.springframework.org/schema/context"
+    xsi:schemaLocation="http://www.springframework.org/schema/beans
+    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
+    http://www.springframework.org/schema/context
+    http://www.springframework.org/schema/context/spring-context-3.0.xsd">
+
+   <context:component-scan base-package="sporadic.JsonExample"></context:component-scan>
+
+</beans>
