我正在尝试实现一个聊天助手，使用 angular 作为客户端并从 Java 端调用 Watson Assistant API。
对于第一次调用，我发送了一条空输入消息，当我在响应中收到上下文时，我将其设置为下一条消息输入以维护对话上下文。
这是Java代码
import javax.annotation.PostConstruct;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import com.xxxx.repapp.assistant.MessageInput;
import com.ibm.watson.developer_cloud.assistant.v1.Assistant;
import com.ibm.watson.developer_cloud.assistant.v1.model.InputData;
import com.ibm.watson.developer_cloud.assistant.v1.model.MessageOptions;
import com.ibm.watson.developer_cloud.assistant.v1.model.MessageResponse;
import com.ibm.watson.developer_cloud.service.exception.NotFoundException;
import com.ibm.watson.developer_cloud.service.exception.RequestTooLargeException;
import com.ibm.watson.developer_cloud.service.exception.ServiceResponseException;
@RestController
@RequestMapping("/app")
public class ConversationResource {
private static final String WORKSPACE_ID = "";
private static final String USERNAME = "";
private static final String PASSWORD = "";
Assistant service = new Assistant("2018-02-16");
@PostConstruct
public void init() {
service.setUsernameAndPassword(USERNAME, PASSWORD);
}
@RequestMapping(value = "rest/conversation/message", method = RequestMethod.POST, produces = MediaType.APPLICATION_JSON_VALUE)
public MessageResponse consecutiveMessages(@RequestBody MessageInput messageInput) {
try {
InputData input = new InputData.Builder(messageInput.getText()).build();
MessageOptions options = new MessageOptions.Builder(WORKSPACE_ID).input(input)
.context(messageInput.getContext()).build();
MessageResponse response = service.message(options).execute();
return response;
} catch (NotFoundException e) {
// Handle Not Found (404) exception
} catch (RequestTooLargeException e) {
// Handle Request Too Large (413) exception
} catch (ServiceResponseException e) {
// Base class for all exceptions caused by error responses from the
// service
System.out.println("Service returned status code " + e.getStatusCode() + ": " + e.getMessage());
}
return null;
}
@RequestMapping(value = "rest/conversation/initialMessage", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE)
public MessageResponse initialMessage() {
InputData input = new InputData.Builder("").build();
MessageOptions options = new MessageOptions.Builder(WORKSPACE_ID).input(input).build();
// sync way
MessageResponse response = service.message(options).execute();
return response;
// async way
/*
* service.message(options).enqueue(new
* ServiceCallback<MessageResponse>() {
*
* @Override public void onResponse(MessageResponse response) {
* System.out.println(response); }
*
* @Override public void onFailure(Exception e) { } });
*/
}
}
MessageInput 类是
import com.ibm.watson.developer_cloud.assistant.v1.model.Context;
public class MessageInput extends com.ibm.watson.developer_cloud.assistant.v1.model.MessageInput{
private Context context;
public Context getContext() {
return context;
}
public void setContext(Context context) {
this.context = contextId;
}
}
当我必须继续对话时，对话会在不维护上下文的情况下重新开始。请看下面的对话流程。
欢迎意向回复
{
"output": {
"text": [
"Hello I am foo assistant. How can I help you?"
],
"nodes_visited": [
"Welcome"
],
"log_messages": []
},
"input": {
"text": ""
},
"intents": [],
"entities": [],
"context": {
"conversation_id": "b935786e-7e9d-499e-bb65-b6ddd23605a0",
"system": {
"dialog_stack": [
{
"dialog_node": "root"
}
],
"dialog_turn_counter": 1.0,
"dialog_request_counter": 1.0,
"_node_output_map": {
"Welcome": {
"0": [
0.0
]
}
},
"branch_exited": true,
"branch_exited_reason": "completed"
}
}
}
设置输入文本和上下文后在下一个请求中设置的 MessageOptions
{
"workspaceId": "*************",
"input": {
"text": "submit meter read"
},
"context": {
"output": {
"text": [
"Hello I am foo assistant. How can I help you?"
],
"nodes_visited": [
"Welcome"
],
"log_messages": []
},
"input": {
"text": ""
},
"intents": [],
"entities": [],
"context": {
"conversation_id": "b935786e-7e9d-499e-bb65-b6ddd23605a0",
"system": {
"dialog_stack": [
{
"dialog_node": "root"
}
],
"dialog_turn_counter": 1,
"dialog_request_counter": 1,
"_node_output_map": {
"Welcome": {
"0": [
0
]
}
},
"branch_exited": true,
"branch_exited_reason": "completed"
}
}
}
}
null
{
"output": {
"text": [
"Hello I am foo assistant. How can I help you?"
],
"nodes_visited": [
"Welcome"
],
"log_messages": []
},
"input": {
"text": ""
},
"intents": [],
"entities": [],
"context": {
"conversation_id": "b935786e-7e9d-499e-bb65-b6ddd23605a0",
"system": {
"dialog_stack": [
{
"dialog_node": "root"
}
],
"dialog_turn_counter": 1,
"dialog_request_counter": 1,
"_node_output_map": {
"Welcome": {
"0": [
0
]
}
},
"branch_exited": true,
"branch_exited_reason": "completed"
}
}
}
null
{
"text": "submit meter read"
}
下一次输入抄表日期后的消息选项
{
"workspaceId": "*************",
"input": {
"text": "2018-09-09"
},
"context": {
"output": {
"text": [
"Please enter meter read date"
],
"nodes_visited": [
"node_1_1534239058536",
"handler_4_1534239240239",
"slot_2_1534239240239"
],
"log_messages": []
},
"input": {
"text": "submit meter read"
},
"intents": [
{
"intent": "submit_meter_read",
"confidence": 0.9712400913238526
}
],
"entities": [],
"context": {
"output": {
"text": [
"Hello I am foo assistant. How can I help you?"
],
"nodes_visited": [
"Welcome"
],
"log_messages": []
},
"input": {
"text": ""
},
"intents": [],
"entities": [],
"context": {
"conversation_id": "b935786e-7e9d-499e-bb65-b6ddd23605a0",
"system": {
"dialog_stack": [
{
"dialog_node": "root"
}
],
"dialog_turn_counter": 1,
"dialog_request_counter": 1,
"_node_output_map": {
"Welcome": {
"0": [
0
]
}
},
"branch_exited": true,
"branch_exited_reason": "completed"
}
},
"conversation_id": "ccfba8ad-06e2-4a74-95e3-20f8251c264c",
"system": {
"dialog_stack": [
{
"dialog_node": "slot_2_1534239240239",
"state": "in_progress"
}
],
"dialog_turn_counter": 1,
"dialog_request_counter": 1,
"_node_output_map": {}
}
}
}
}
现在预期的响应应该继续要求再填充一个槽，但如果您观察到以下响应，它会被重置。
{
"output": {
"text": [
"I didn't understand. You can try rephrasing. I can help you with things like meter read submission, raising a complaint, and giving some general information."
],
"nodes_visited": [
"Anything else"
],
"log_messages": []
},
"input": {
"text": "2018-09-09"
},
"intents": [],
"entities": [
{
"entity": "sys-number",
"location": [
0.0,
4.0
],
"value": "2018",
"confidence": 1.0,
"metadata": {
"numeric_value": 2018.0
}
},
{
"entity": "sys-date",
"location": [
0.0,
10.0
],
"value": "2018-09-09",
"confidence": 1.0,
"metadata": {
"calendar_type": "GREGORIAN",
"timezone": "GMT"
}
},
{
"entity": "sys-number",
"location": [
4.0,
7.0
],
"value": "-9",
"confidence": 1.0,
"metadata": {
"numeric_value": -9.0
}
},
{
"entity": "sys-number",
"location": [
7.0,
10.0
],
"value": "-9",
"confidence": 1.0,
"metadata": {
"numeric_value": -9.0
}
}
],
"context": {
"output": {
"text": [
"Please enter meter read date"
],
"nodes_visited": [
"node_1_1534239058536",
"handler_4_1534239240239",
"slot_2_1534239240239"
],
"log_messages": []
},
"input": {
"text": "submit meter read"
},
"intents": [
{
"intent": "submit_meter_read",
"confidence": 0.9712400913238526
}
],
"entities": [],
"context": {
"output": {
"text": [
"Hello I am foo assistant. How can I help you?"
],
"nodes_visited": [
"Welcome"
],
"log_messages": []
},
"input": {
"text": ""
},
"intents": [],
"entities": [],
"context": {
"conversation_id": "b935786e-7e9d-499e-bb65-b6ddd23605a0",
"system": {
"dialog_stack": [
{
"dialog_node": "root"
}
],
"dialog_turn_counter": 1.0,
"dialog_request_counter": 1.0,
"_node_output_map": {
"Welcome": {
"0": [
0.0
]
}
},
"branch_exited": true,
"branch_exited_reason": "completed"
}
},
"conversation_id": "ccfba8ad-06e2-4a74-95e3-20f8251c264c",
"system": {
"dialog_stack": [
{
"dialog_node": "slot_2_1534239240239",
"state": "in_progress"
}
],
"dialog_turn_counter": 1.0,
"dialog_request_counter": 1.0,
"_node_output_map": {}
}
},
"conversation_id": "39f82cb9-e0f1-47b9-845e-892c0d589aed",
"system": {
"dialog_stack": [
{
"dialog_node": "root"
}
],
"dialog_turn_counter": 1.0,
"dialog_request_counter": 1.0,
"_node_output_map": {
"Anything else": {
"0": [
0.0,
0.0,
2.0,
1.0
]
}
},
"branch_exited": true,
"branch_exited_reason": "completed"
}
}
}
上面代码中缺少的地方，请帮助我维护对话流程。谢谢
您需要发送从响应中获得的上下文。您似乎从输入对象中检索上下文。从响应传输到 MessageInput 对象的上下文信息在哪里？
您可能已经看到此示例的两个连续消息：https : //github.com/watson-developer-cloud/java-sdk/tree/master/assistant
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