Spring/spring-framework
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Force TokenBuffer to use BigDecimal if necessary

Browse Source 
This commit makes the Jackson2Tokenizer enable
TokenBuffer.forceUseOfBigDecimal if the element type given to the
Decoder is BigDecimal. Previous to this commit, values would be
converted to floats.

Closes gh-24479
This commit is contained in:
Arjen Poutsma
2020-02-07 14:43:24 +01:00
parent 0d7494ac52
commit 17117bd21a
4 changed files with 54 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
spring-web/src/main/java/org/springframework/http/codec/json/AbstractJackson2Decoder.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright 2002-2019 the original author or authors.
* Copyright 2002-2020 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -18,11 +18,13 @@ package org.springframework.http.codec.json;
import java.io.IOException;
import java.lang.annotation.Annotation;
import java.math.BigDecimal;
import java.util.List;
import java.util.Map;
import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.ObjectReader;
@@ -113,8 +115,13 @@ public abstract class AbstractJackson2Decoder extends Jackson2CodecSupport imple
public Flux<Object> decode(Publisher<DataBuffer> input, ResolvableType elementType,
@Nullable MimeType mimeType, @Nullable Map<String, Object> hints) {
Flux<TokenBuffer> tokens = Jackson2Tokenizer.tokenize(
Flux.from(input), this.jsonFactory, getObjectMapper(), true, getMaxInMemorySize());
boolean forceUseOfBigDecimal = getObjectMapper().isEnabled(DeserializationFeature.USE_BIG_DECIMAL_FOR_FLOATS);
if (elementType != null && BigDecimal.class.equals(elementType.getType())) {
forceUseOfBigDecimal = true;
}
Flux<TokenBuffer> tokens = Jackson2Tokenizer.tokenize(Flux.from(input), this.jsonFactory, getObjectMapper(),
true, forceUseOfBigDecimal, getMaxInMemorySize());
return decodeInternal(tokens, elementType, mimeType, hints);
}
@@ -122,8 +129,12 @@ public abstract class AbstractJackson2Decoder extends Jackson2CodecSupport imple
public Mono<Object> decodeToMono(Publisher<DataBuffer> input, ResolvableType elementType,
@Nullable MimeType mimeType, @Nullable Map<String, Object> hints) {
Flux<TokenBuffer> tokens = Jackson2Tokenizer.tokenize(
Flux.from(input), this.jsonFactory, getObjectMapper(), false, getMaxInMemorySize());
boolean forceUseOfBigDecimal = getObjectMapper().isEnabled(DeserializationFeature.USE_BIG_DECIMAL_FOR_FLOATS);
if (elementType != null && BigDecimal.class.equals(elementType.getType())) {
forceUseOfBigDecimal = true;
}
Flux<TokenBuffer> tokens = Jackson2Tokenizer.tokenize(Flux.from(input), this.jsonFactory, getObjectMapper(),
false, forceUseOfBigDecimal, getMaxInMemorySize());
return decodeInternal(tokens, elementType, mimeType, hints).singleOrEmpty();
}

7
spring-web/src/main/java/org/springframework/http/codec/json/Jackson2Tokenizer.java
View File

@@ -27,7 +27,6 @@ import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.JsonToken;
import com.fasterxml.jackson.core.async.ByteArrayFeeder;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.deser.DefaultDeserializationContext;
import com.fasterxml.jackson.databind.util.TokenBuffer;
@@ -232,10 +231,13 @@ final class Jackson2Tokenizer {
* @param objectMapper the current mapper instance
* @param tokenizeArrays if {@code true} and the "top level" JSON object is
* an array, each element is returned individually immediately after it is received
* @param forceUseOfBigDecimal if {@code true}, any floating point values encountered in source will use
* {@link java.math.BigDecimal}
* @param maxInMemorySize maximum memory size
* @return the resulting token buffers
*/
public static Flux<TokenBuffer> tokenize(Flux<DataBuffer> dataBuffers, JsonFactory jsonFactory,
ObjectMapper objectMapper, boolean tokenizeArrays, int maxInMemorySize) {
ObjectMapper objectMapper, boolean tokenizeArrays, boolean forceUseOfBigDecimal, int maxInMemorySize) {
try {
JsonParser parser = jsonFactory.createNonBlockingByteArrayParser();
@@ -244,7 +246,6 @@ final class Jackson2Tokenizer {
context = ((DefaultDeserializationContext) context).createInstance(
objectMapper.getDeserializationConfig(), parser, objectMapper.getInjectableValues());
}
boolean forceUseOfBigDecimal = objectMapper.isEnabled(DeserializationFeature.USE_BIG_DECIMAL_FOR_FLOATS);
Jackson2Tokenizer tokenizer = new Jackson2Tokenizer(parser, context, tokenizeArrays, forceUseOfBigDecimal,
maxInMemorySize);
return dataBuffers.flatMap(tokenizer::tokenize, Flux::error, tokenizer::endOfInput);