Json2Bean.java

package jackson;

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import java.io.IOException;

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import org.codehaus.jackson.map.ObjectMapper;

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public class Json2Bean {

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?? public static void main(String[] args) throws IOException{

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????? String jsonStr = "{\"name\":\"Morris\",\"age\":\"22\",\"sex\":\"男\"}";

?????

????? ObjectMapper mapper = new ObjectMapper();

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????? Person person = mapper.readValue(jsonStr, Person.class);

?????

????? System.out.println(person);

?? }

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}

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Json2List.java

package jackson;

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import java.io.IOException;

import java.util.LinkedHashMap;

import java.util.List;

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import org.codehaus.jackson.map.ObjectMapper;

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public class Json2List {

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?? public static void main(String[] args) throws IOException {

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????? String jsonStr = "[{\"name\":\"Bob\",\"age\":\"33\",\"sex\":\"女\"},"

?????????? + "{\"name\":\"Morris\",\"age\":\"22\",\"sex\":\"男\"}]";

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????? ObjectMapper mapper = new ObjectMapper();

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????? List<LinkedHashMap<String, String>> list = mapper.readValue(jsonStr, List.class);

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????? for (LinkedHashMap<String, String> linkedHashMap : list) {

??????? for (String key:linkedHashMap.keySet()) {

??????? ?? System.out.println(key+":"+linkedHashMap.get(key));

??????? }

????? }

?? }

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}

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Json2Map.java

package jackson;

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import java.io.IOException;

import java.util.Map;

import java.util.Set;

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import org.codehaus.jackson.map.ObjectMapper;

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public class Json2Map {

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?? public static void main(String[] args) throws IOException {

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????? String jsonStr = "{\"success\":true,\"A\":{\"address\": \"address2\",\"name\":\"haha2\",\"id\":2,\"email\":\"email2\"},"+

??????????????? "\"B\":{\"address\":\"address\",\"name\":\"haha\",\"id\":1,\"email\":\"email\"}}";

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????? ObjectMapper mapper = new ObjectMapper();

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????? Map map = mapper.readValue(jsonStr, Map.class);

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????? Set keySet = map.keySet();

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????? for (Object key : keySet) {

??????? System.out.println(key+":"+map.get(key));

????? }

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?? }

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}

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Json2Array.java

package jackson;

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import java.io.IOException;

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import org.codehaus.jackson.map.ObjectMapper;

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public class Json2Array {

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?? public static void main(String[] args) throws IOException {

?????

????? String jsonStr = "[{\"name\":\"Bob\",\"age\":\"33\",\"sex\":\"女\"},"

?????????? + "{\"name\":\"Morris\",\"age\":\"22\",\"sex\":\"男\"}]";

?????

????? ObjectMapper mapper = new ObjectMapper();

?????

????? Person[] persons = mapper.readValue(jsonStr, Person[].class);

?????

????? for (Person person : persons) {

??????? System.out.println(person);

????? }

?????

?????

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?? }

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}

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