1.自定义序列化过程 <1>方式1 参见http://www.cnblogs.com/lic309/p/5048631.htm 建议此方法
public class MyBeanSerializerModifier extends BeanSerializerModifier { private JsonSerializer<Object> customeJsonSerializer = new NullSerializer(); private static final Set<String> IGNORED_FIELDS = new HashSet<String>(Arrays.asList("pwd", "id", "userName")); @Override public List<BeanPropertyWriter> changeProperties(SerializationConfig config, BeanDescription beanDesc, List<BeanPropertyWriter> beanProperties) { // 循环所有的beanPropertyWriter for (int i = 0; i < beanProperties.size(); i++) { BeanPropertyWriter writer = beanProperties.get(i); final String propName = writer.getName(); if (IGNORED_FIELDS.contains(propName)) { writer.assignSerializer(this.defaultCustomeJsonSerializer()); } } return beanProperties; } private JsonSerializer<Object> defaultCustomeJsonSerializer() { return customeJsonSerializer; }}
public class CustomeSerializer extends JsonSerializer<Object>{ @Override public void serialize(Object value, JsonGenerator gen, SerializerProvider serializers) throws IOException, JsonProcessingException { gen.writeString("********"); }}
//调用 StringWriter stringWriter = new StringWriter(); try { ObjectMapper mapper = new ObjectMapper(); mapper.setSerializerFactory(mapper.getSerializerFactory().withSerializerModifier(new MyBeanSerializerModifier())); mapper.writeValue(stringWriter, paramObj); } catch (JsonGenerationException e) { e.printStackTrace(); } catch (JsonMappingException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return stringWriter.toString();<2>方式2
public class EntityCustomSerializationFactory extends BeanSerializerFactory { private static final long serialVersionUID = 1L; public EntityCustomSerializationFactory() { this(null); } protected EntityCustomSerializationFactory(SerializerFactoryConfig config) { super(config); } // ignored fields private static final Set<String> IGNORED_FIELDS = new HashSet<String>(Arrays.asList("pwd", "id", "obj")); @Override protected void processViews(SerializationConfig config, BeanSerializerBuilder builder) { super.processViews(config, builder); // ignore fields only for concrete class // note, that you can avoid or change this check // if (builder.getBeanDescription().getBeanClass().equals(Entity.class)) // { // get original writer List<BeanPropertyWriter> originalWriters = builder.getProperties(); // create actual writers List<BeanPropertyWriter> writers = new ArrayList<BeanPropertyWriter>(); for (BeanPropertyWriter writer : originalWriters) { final String propName = writer.getName(); // if it isn't ignored field, add to actual writers list if (IGNORED_FIELDS.contains(propName)) { writer.assignSerializer(new JsonSerializer<Object>() { @Override public void serialize(Object value, JsonGenerator gen, SerializerProvider serializers) throws IOException, JsonProcessingException { gen.writeString("****"); } }); writers.add(writer); } else { writers.add(writer); } } builder.setProperties(writers); }}
ObjectMapper objectMapper = new ObjectMapper(); objectMapper.setSerializerFactory(new EntityCustomSerializationFactory());