blocks|key|580354|text|我终于明白了：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|580355|ObjectMapper+objectMapper+=+new+ObjectMapper();
TypeFactory+typeFactory+=+objectMapper.getTypeFactory();
List<SomeClass>+someClassList+=+objectMapper.readValue(jsonString,+typeFactory.constructCollectionType(List.class,+SomeClass.class));|code-block|syntax|javascript|580356|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I finally got it:

<pre><code>ObjectMapper objectMapper = new ObjectMapper();
TypeFactory typeFactory = objectMapper.getTypeFactory();
List&lt;SomeClass&gt; someClassList = objectMapper.readValue(jsonString, typeFactory.constructCollectionType(List.class, SomeClass.class));
</code></pre>

blocks|key|796308|text|另一个答案是正确的，但为了完整，下面是其他方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|796309|List<SomeClass>+list+=+mapper.readValue(jsonString,+new+TypeReference<List<SomeClass>>()+{+});
SomeClass[]+array+=+mapper.readValue(jsonString,+SomeClass[].class);|code-block|syntax|javascript|796310|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

The other answer is correct, but for completeness, here are other ways:

<pre><code>List&lt;SomeClass&gt; list = mapper.readValue(jsonString, new TypeReference&lt;List&lt;SomeClass&gt;&gt;() { });
SomeClass[] array = mapper.readValue(jsonString, SomeClass[].class);
</code></pre>

blocks|key|580480|text|我通过验证JSONLint.com上的json，然后使用Jackson解决了这个问题。下面是相同的代码。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|580481|+Main+Class:-

String+jsonStr+=+"[{\r\n"+%2B+"+++++++\"name\":+\"John\",\r\n"+%2B+"++++++++\"city\":+\"Berlin\",\r\n"
++++++++++++++++%2B+"+++++++++\"cars\":+[\r\n"+%2B+"++++++++++++\"FIAT\",\r\n"+%2B+"++++++++++\"Toyata\"\r\n"
++++++++++++++++%2B+"+++++],\r\n"+%2B+"+++++\"job\":+\"Teacher\"\r\n"+%2B+"+++},\r\n"+%2B+"+{\r\n"
++++++++++++++++%2B+"+++++\"name\":+\"Mark\",\r\n"+%2B+"++++++++\"city\":+\"Oslo\",\r\n"+%2B+"++++++++\"cars\":+[\r\n"
++++++++++++++++%2B+"+++++++++\"VW\",\r\n"+%2B+"++++++++++++\"Toyata\"\r\n"+%2B+"+++++],\r\n"
++++++++++++++++%2B+"+++++\"job\":+\"Doctor\"\r\n"+%2B+"++++}\r\n"+%2B+"]";

++++++++ObjectMapper+mapper+=+new+ObjectMapper();

++++++++MyPojo+jsonObj[]+=+mapper.readValue(jsonStr,+MyPojo[].class);

++++++++for+(MyPojo+itr+:+jsonObj)+{

++++++++++++System.out.println("Val+of+getName+is:+"+%2B+itr.getName());
++++++++++++System.out.println("Val+of+getCity+is:+"+%2B+itr.getCity());
++++++++++++System.out.println("Val+of+getJob+is:+"+%2B+itr.getJob());
++++++++++++System.out.println("Val+of+getCars+is:+"+%2B+itr.getCars()+%2B+"\n");

++++++++}

POJO:

public+class+MyPojo+{

private+List<String>+cars+=+new+ArrayList<String>();

private+String+name;

private+String+job;

private+String+city;

public+List<String>+getCars()+{
++++return+cars;
}

public+void+setCars(List<String>+cars)+{
++++this.cars+=+cars;
}

public+String+getName()+{
++++return+name;
}

public+void+setName(String+name)+{
++++this.name+=+name;
}

public+String+getJob()+{
++++return+job;
}

public+void+setJob(String+job)+{
++++this.job+=+job;
}

public+String+getCity()+{
++++return+city;
}

public+void+setCity(String+city)+{
++++this.city+=+city;
}+}

++RESULT:-
+++++++++Val+of+getName+is:+John
+++++++++Val+of+getCity+is:+Berlin
+++++++++Val+of+getJob+is:+Teacher
+++++++++Val+of+getCars+is:+[FIAT,+Toyata]

++++++++++Val+of+getName+is:+Mark
++++++++++Val+of+getCity+is:+Oslo
++++++++++Val+of+getJob+is:+Doctor
++++++++++Val+of+getCars+is:+[VW,+Toyata]|code-block|syntax|javascript|580482|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I sorted this problem by verifying the json on JSONLint.com and then using Jackson. Below is the code for the same.

<pre><code> Main Class:-

String jsonStr = "[{\r\n" + " \"name\": \"John\",\r\n" + " \"city\": \"Berlin\",\r\n"
 + " \"cars\": [\r\n" + " \"FIAT\",\r\n" + " \"Toyata\"\r\n"
 + " ],\r\n" + " \"job\": \"Teacher\"\r\n" + " },\r\n" + " {\r\n"
 + " \"name\": \"Mark\",\r\n" + " \"city\": \"Oslo\",\r\n" + " \"cars\": [\r\n"
 + " \"VW\",\r\n" + " \"Toyata\"\r\n" + " ],\r\n"
 + " \"job\": \"Doctor\"\r\n" + " }\r\n" + "]";

 ObjectMapper mapper = new ObjectMapper();

 MyPojo jsonObj[] = mapper.readValue(jsonStr, MyPojo[].class);

 for (MyPojo itr : jsonObj) {

 System.out.println("Val of getName is: " + itr.getName());
 System.out.println("Val of getCity is: " + itr.getCity());
 System.out.println("Val of getJob is: " + itr.getJob());
 System.out.println("Val of getCars is: " + itr.getCars() + "\n");

 }

POJO:

public class MyPojo {

private List&lt;String&gt; cars = new ArrayList&lt;String&gt;();

private String name;

private String job;

private String city;

public List&lt;String&gt; getCars() {
 return cars;
}

public void setCars(List&lt;String&gt; cars) {
 this.cars = cars;
}

public String getName() {
 return name;
}

public void setName(String name) {
 this.name = name;
}

public String getJob() {
 return job;
}

public void setJob(String job) {
 this.job = job;
}

public String getCity() {
 return city;
}

public void setCity(String city) {
 this.city = city;
} }

 RESULT:-
 Val of getName is: John
 Val of getCity is: Berlin
 Val of getJob is: Teacher
 Val of getCars is: [FIAT, Toyata]

 Val of getName is: Mark
 Val of getCity is: Oslo
 Val of getJob is: Doctor
 Val of getCars is: [VW, Toyata]
</code></pre>

I have a <code>String</code> with the following value:

<pre><code>[
 {
 "key1": "value11",
 "key2": "value12"
 },
 {
 "key1": "value21",
 "key2": "value22"
 }
]
</code></pre>

And the following class:

<pre><code>public class SomeClass {
 private String key1;
 private String key2;
 /* ... getters and setters omitted ...*/
}
</code></pre>

And I want to parse it to a <code>List&lt;SomeClass&gt;</code> or a <code>SomeClass[]</code>

Which is the simplest way to do it using <a href="http://jackson.codehaus.org/" rel="noreferrer">Jackson</a> <code>ObjectMapper</code>?

How to parse a JSON string to an array using Jackson

我有一个具有下列值的String：[  {    "key1": "value11",    "key2": "value12"  },  {    "key1": "value21",    "key2": "value22"  }]和下面的类：public class SomeClass {    private ...

问如何使用Jackson将JSON字符串解析为数组
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