Fastjson the long type to JSON precision loss problem resolution

This isJackson

public void Extendmessageconverters (list

for (httpmessageconverter<?> c:converters) {

if (c instanceof mappingjackson2httpmessageconverter) {

Mappingjackson2httpmessageconverter Mappingjackson2httpmessageconverter = (mappingjackson2httpmessageconverter) C;

Objectmapper objectmapper = Mappingjackson2httpmessageconverter.getobjectmapper ();

Objectmapper.configure (Serializationfeature.write_dates_as_timestamps, false);

if (This.dateformat! = null) {

DateFormat Mydateformat = new SimpleDateFormat (DateFormat);

Objectmapper.setdateformat (Mydateformat);

}

Registering a long dedicated JSON converter

Simplemodule module = new Simplemodule ();

Fixed long, missing precision problem

Module.addserializer (Long.class, com.fasterxml.jackson.databind.ser.std.ToStringSerializer.instance);

Module.addserializer (Long.type, com.fasterxml.jackson.databind.ser.std.ToStringSerializer.instance);

Module.addserializer (Bigdecimal.class, com.fasterxml.jackson.databind.ser.std.ToStringSerializer.instance);

Module.addserializer (Biginteger.class, com.fasterxml.jackson.databind.ser.std.ToStringSerializer.instance);

Objectmapper.registermodule (module);

}

}

}

Change to Fastjson below.

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-web</artifactId>

<exclusions>

<!--JSON Library unified use Fastjson--

<exclusion>

<groupId>com.fasterxml.jackson.core</groupId>

<artifactId>jackson-databind</artifactId>

</exclusion>

</exclusions>

</dependency>

Generates a serialized transformation class Tostringserializer

public class Tostringserializer implements Objectserializer {

public static final Tostringserializer instance = new Tostringserializer ();

@Override

public void Write (Jsonserializer Serializer, Object object, Object FieldName, Type FieldType,

int features) throws IOException {

Serializewriter out = serializer.out;

if (object = = null) {

Out.writenull ();

Return

}

String strval = object.tostring ();

Out.writestring (Strval);

}

}

Web configuration for Tostringserializer

@Bean

Public Httpmessageconverters getconverters () {

Fastjsonhttpmessageconverter converter = new Fastjsonhttpmessageconverter ();

Fastjsonconfig config = new Fastjsonconfig ();

Config.setserializerfeatures (

Serializerfeature.writemapnullvalue,

Serializerfeature.quotefieldnames,

Serializerfeature.ignorenonfieldgetter

);

Serializeconfig serializeconfig = new Customserializeconfig ();

Serializeconfig.put (Biginteger.class, tostringserializer.instance);

Serializeconfig.put (Long.class, tostringserializer.instance);

Serializeconfig.put (Long.type, tostringserializer.instance);

Config.setserializeconfig (Serializeconfig);

Converter.setfastjsonconfig (config);

list<mediatype> mediatypes = Arrays.aslist (

Mediatype.application_json_utf8,

Mediatype.text_plain,

Mediatype.text_html,

Mediatype.text_xml,

Mediatype.application_octet_stream);

Converter.setsupportedmediatypes (mediatypes);

return new Httpmessageconverters (converter);

}

As shown above, registered serialization type, tested, function OK!

@Override

public void Configuremessageconverters (list

Initializing the converter

Fastjsonhttpmessageconverter Fastconvert = new Fastjsonhttpmessageconverter ();

Initializing a converter configuration

Fastjsonconfig fastjsonconfig = new Fastjsonconfig ();

Json. Deffault_date_format = "Yyyy-mm-dd hh:mm";

Fastjsonconfig.setserializerfeatures (Serializerfeature.browsercompatible,

Serializerfeature.writenulllistasempty,

Serializerfeature.prettyformat,

Serializerfeature.writedateusedateformat,

Serializerfeature.writenullstringasempty,

Serializerfeature.writemapnullvalue,

Serializerfeature.disablecircularreferencedetect);

Resolving the problem of long-to-JSON precision loss

Serializeconfig serializeconfig = serializeconfig.globalinstance;

Serializeconfig.put (Biginteger.class, tostringserializer.instance);

Serializeconfig.put (Long.class, tostringserializer.instance);

Serializeconfig.put (Long.type, tostringserializer.instance);

Fastjsonconfig.setserializeconfig (Serializeconfig);

To set the configuration to the converter and add it to the Httpmessageconverter converter list

Fastconvert.setfastjsonconfig (Fastjsonconfig);

Converters.add (Fastconvert);

}

Package com.chz.component.basic.configure;

Import Com.alibaba.fastjson.serializer.SerializeConfig;

Import Com.alibaba.fastjson.serializer.ToStringSerializer;

Import Com.alibaba.fastjson.support.config.FastJsonConfig;

Import Java.math.BigInteger;

public class Fastjsonconfigext extends Fastjsonconfig {

Public Fastjsonconfigext () {

Super ();

Serializeconfig serializeconfig = serializeconfig.globalinstance;

Serializeconfig.put (Biginteger.class, tostringserializer.instance);

Serializeconfig.put (long.class,tostringserializer.instance);

Serializeconfig.put (long.type,tostringserializer.instance);

This.setserializeconfig (Serializeconfig);

}

}

@Configuration

public class Webconfig extends Webmvcconfigureradapter {

@Override

public void Configuremessageconverters (list

Fastjsonhttpmessageconverter Fastconverter =

New Fastjsonhttpmessageconverter ();

Fastjsonconfig fastjsonconfig = new Fastjsonconfig ();

Serializeconfig serializeconfig = serializeconfig.globalinstance;

Serializeconfig.put (Biginteger.class, tostringserializer.instance);

Serializeconfig.put (Long.class, tostringserializer.instance);

Serializeconfig.put (Long.type, tostringserializer.instance);

Fastjsonconfig.setserializeconfig (Serializeconfig);

Fastconverter.setfastjsonconfig (Fastjsonconfig);

Converters.add (Fastconverter);

}

}

Fastjson the long type to JSON precision loss problem resolution