我正在尝试使用Gson解析器解析json输入文件,但它总是抛出错误
'预计BEGIN_ARRAY但在第1行第2栏路径上是BEGIN_OBJECT $' 不知道我在这里缺少什么。如果我从EventRecords(它不是一个有效的json)中删除引号并用// eventRecords = gson.fromJson(bufferedReader,SNSEventRecords.class)替换下面的代码,我能够解析它;
test1.json:
{
"EventRecords": [
{
"eventVersion": "2.0",
"eventSource": "aws:s3",
"awsRegion": "us-east-1",
"eventTime": "2018-05-10T17:10:01.420Z",
"eventName": "ObjectCreated:Put"
}
]
}
Record.java
public class Record {
String eventVersion;
String eventSource;
String awsRegion;
String eventTime;
String eventName;
public String getEventVersion() {
return eventVersion;
}
public void setEventVersion(String eventVersion) {
this.eventVersion = eventVersion;
}
public String getEventSource() {
return eventSource;
}
public void setEventSource(String eventSource) {
this.eventSource = eventSource;
}
public String getAwsRegion() {
return awsRegion;
}
public void setAwsRegion(String awsRegion) {
this.awsRegion = awsRegion;
}
public String getEventTime() {
return eventTime;
}
public void setEventTime(String eventTime) {
this.eventTime = eventTime;
}
public String getEventName() {
return eventName;
}
public void setEventName(String eventName) {
this.eventName = eventName;
}
@Override
public String toString () {
return ToStringBuilder.reflectionToString(this,ToStringStyle.MULTI_LINE_STYLE);
}
}
SNSEventRecords.java:
public class SNSEventRecords {
private List<Record> EventRecords;
public List<Record> getEventRecords() {
return EventRecords;
}
public void setEventRecords(List<Record> eventRecords) {
this.EventRecords = eventRecords;
}
@Override
public String toString () {
return ToStringBuilder.reflectionToString(this,ToStringStyle.MULTI_LINE_STYLE);
}
}
GsonEncoder.java:
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.lang.reflect.Type;
import java.util.List;
import com.goo*emphasized text*gle.gson.Gson;
import com.google.gson.reflect.TypeToken;
import com.google.gson.stream.JsonReader;
import com.google.gson.stream.JsonToken;
import com.uberops.validator.gson.dto.Record;
import com.uberops.validator.gson.dto.SNSEventRecords;
public class GsonEncoder {
public void jsonEncoder(String filePath) throws FileNotFoundException {
Type listType = new TypeToken<List<Record>>(){}.getType();
Gson gson = new Gson();
JsonReader reader = new JsonReader(new FileReader(filePath));
//BufferedReader reader = new BufferedReader(new FileReader(filePath));
SNSEventRecords eventRecords = gson.fromJson(reader, listType);
List<Record> records = eventRecords.getEventRecords();
System.out.println("\n\nEventRecords\n\n" + records.toString());
}
public static void main(String[] args) throws FileNotFoundException {
GsonEncoder obj2 = new GsonEncoder();
File f2 = new File("/Users/test/Desktop/test1.json");
obj2.jsonEncoder(f2.getAbsolutePath());
}
}
答案 0 :(得分:2)
尝试设置eventRecords
字段的serialized name以匹配JSON。
@SerializedName("EventRecords")
private List<Record> eventRecords;