jacksonall的使用，解析json

转自：http://www.cnblogs.com/lee0oo0/archive/2012/08/23/2652751.html ，

Jackson可以轻松的将Java对象转换成json对象和xml文档，同样也可以将json、xml转换成Java对象。可以参考：

Jackson 框架，轻易转换JSON

首先需要下载包：jackson-databind-2.0.5.jar jackson-annotations-2.0.5.jar jackson-core-2.0.5.jar，网址在：http://wiki.fasterxml.com/JacksonDownload

custom.json:

{
    "country":"USA",
    "countryInfo":{"golden":40,"silver":23,"copper":33,"tank":1},
"countryDetail":[
    {"id":"no","header":"号码","fieldIndex":"no","sortOrder":null,"printable":true},
    {"id":"name","header":"姓名","fieldIndex":"name","sortOrder":null,"printable":true},
    {"id":"total","header":"总成绩","fieldIndex":"total","sortOrder":null,"printable":true},
    {"id":"detail","header":"详细信息","fieldIndex":"detail","sortOrder":null,"printable":true}
   ],
"orgood":true}

Java的Bean及解析:

 public class Bean {

     private String country;
     private boolean orgood;
     private Country countryInfo;
     private CountryDetail[] countryDetail;

     public String getCountry() {
         return country;
     }

     public void setCountry(String country) {
         this.country = country;
     }

     public boolean isOrgood() {
         return orgood;
     }

     public void setOrgood(boolean orgood) {
         this.orgood = orgood;
     }

     public Country getCountryInfo() {
         return countryInfo;
     }

     public void setCountryInfo(Country countryInfo) {
         this.countryInfo = countryInfo;
     }

     public CountryDetail[] getCountryDetail() {
         return countryDetail;
     }

     public void setCountryDetail(CountryDetail[] countryDetail) {
         this.countryDetail = countryDetail;
     }

     public static class Country {
         public String getGolden() {
             return golden;
         }

         public void setGolden(String golden) {
             this.golden = golden;
         }

         public String getSilver() {
             return silver;
         }

         public void setSilver(String silver) {
             this.silver = silver;
         }

         public String getCopper() {
             return copper;
         }

         public void setCopper(String copper) {
             this.copper = copper;
         }

         public String getTank() {
             return tank;
         }

         public void setTank(String tank) {
             this.tank = tank;
         }

         private String golden;
         private String silver;
         private String copper;
         private String tank;

     }

     public static class CountryDetail {
         public String getId() {
             return id;
         }

         public void setId(String id) {
             this.id = id;
         }

         public String getHeader() {
             return header;
         }

         public void setHeader(String header) {
             this.header = header;
         }

         public String getFieldIndex() {
             return fieldIndex;
         }

         public void setFieldIndex(String fieldIndex) {
             this.fieldIndex = fieldIndex;
         }

         public String getSortOrder() {
             return sortOrder;
         }

         public void setSortOrder(String sortOrder) {
             this.sortOrder = sortOrder;
         }

         public boolean isPrintable() {
             return printable;
         }

         public void setPrintable(boolean printable) {
             this.printable = printable;
         }

         private String id;
         private String header;
         private String fieldIndex;
         private String sortOrder;
         private boolean printable;

     }

     public static void main(String args[]) {
         ObjectMapper mapper = new ObjectMapper();
         try {
             Bean bean = mapper.readValue(new File("custom.json"), Bean.class); // 读取
                                                                                 // System.out.println("Country:"+bean.getCountry());
             System.out.println("CountryInfo:" + bean.getCountryInfo().getGolden());
             System.out.println("CountryDetail:" + bean.getCountryDetail()[1].getHeader());
             System.out.println("orgood:" + bean.isOrgood());
         } catch (JsonParseException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         } catch (JsonMappingException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         } catch (IOException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         }
     }
 }