var paramObject = JSON.parse(param); var name = paramObject["startPointEmpty"]
时间: 2024-05-31 16:14:23 浏览: 11
这段代码是将一个 JSON 字符串解析为 JavaScript 对象,并从中获取了一个名为 "startPointEmpty" 的属性值赋给了变量 name。
具体来说,JSON.parse() 方法将传入的 JSON 字符串转换为 JavaScript 对象。接着,paramObject 变量即为该 JavaScript 对象,可以通过方括号操作符 ["startPointEmpty"] 来访问其中的属性。最后,获取到的属性值被赋给了变量 name。
相关问题
我需要go语言代码,编写一个静态Dashboard页面,并能够和mysql数据库中的用户表进行交互。与后端数据库中用户表匹配后跳转。
以下是一个简单的示例代码,希望对您有所帮助:
1. 后端:
```go
package main
import (
"database/sql"
"fmt"
"log"
"net/http"
_ "github.com/go-sql-driver/mysql"
"github.com/gin-gonic/gin"
)
type User struct {
ID int `json:"id"`
Name string `json:"name"`
Password string `json:"password"`
}
func main() {
db, err := sql.Open("mysql", "root:password@tcp(127.0.0.1:3306)/test")
if err != nil {
log.Fatal(err)
}
defer db.Close()
router := gin.Default()
router.GET("/users", func(c *gin.Context) {
var users []User
rows, err := db.Query("SELECT id, name, password FROM user")
if err != nil {
c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
return
}
defer rows.Close()
for rows.Next() {
var user User
if err := rows.Scan(&user.ID, &user.Name, &user.Password); err != nil {
c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
return
}
users = append(users, user)
}
c.JSON(http.StatusOK, users)
})
router.GET("/user/:id", func(c *gin.Context) {
id := c.Param("id")
var user User
err := db.QueryRow("SELECT id, name, password FROM user WHERE id=?", id).Scan(&user.ID, &user.Name, &user.Password)
if err != nil {
c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
return
}
c.JSON(http.StatusOK, user)
})
router.POST("/user", func(c *gin.Context) {
var user User
if err := c.BindJSON(&user); err != nil {
c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
return
}
_, err := db.Exec("INSERT INTO user (name, password) VALUES (?, ?)", user.Name, user.Password)
if err != nil {
c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
return
}
c.JSON(http.StatusOK, gin.H{"message": "User added successfully"})
})
router.Run(":8080")
}
```
2. 前端:
```html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Dashboard</title>
</head>
<body>
<form>
<label for="userId">User ID:</label>
<input type="text" id="userId" name="userId">
<input type="button" value="Submit" onclick="getUser()">
</form>
<div id="userInfo"></div>
<script>
function getUser() {
var userId = document.getElementById("userId").value;
var xhr = new XMLHttpRequest();
xhr.open("GET", "http://localhost:8080/user/" + userId);
xhr.onload = function () {
if (xhr.status === 200) {
var user = JSON.parse(xhr.responseText);
var userInfo = document.getElementById("userInfo");
userInfo.innerHTML = "ID: " + user.id + "<br>" +
"Name: " + user.name + "<br>" +
"Password: " + user.password;
} else {
alert("Error: " + xhr.statusText);
}
};
xhr.onerror = function () {
alert("Network Error");
};
xhr.send();
}
</script>
</body>
</html>
```
3. 数据库:
在mysql数据库中创建用户表,可以使用以下命令:
```sql
CREATE TABLE user (
id INT NOT NULL AUTO_INCREMENT,
name VARCHAR(255) NOT NULL,
password VARCHAR(255) NOT NULL,
PRIMARY KEY (id)
);
```
以上代码仅供参考,可能需要根据具体的需求进行修改和调整。
利用讯飞开放平台写一段代码使用自然语言处理技术,将一种语言翻译成另一种语言,并 可以通过语音合成技术进行交互,包含前后端内容,并且可以正常运行
//前端代码
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>语言翻译和语音合成</title>
<script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
<script src="http://webapi.xfyun.cn/demo/vio/js/lib/md5.js"></script>
<script src="http://webapi.xfyun.cn/demo/vio/js/lib/sha1.js"></script>
<script src="http://webapi.xfyun.cn/demo/vio/js/lib/hmac.js"></script>
<script src="http://webapi.xfyun.cn/demo/vio/js/lib/url.js"></script>
<script src="http://webapi.xfyun.cn/demo/vio/js/lib/base64.js"></script>
<script src="http://webapi.xfyun.cn/demo/vio/js/lib/cryptojs.js"></script>
<script src="http://webapi.xfyun.cn/demo/vio/js/lib/wordbreak.js"></script>
<script src="http://webapi.xfyun.cn/demo/vio/js/lib/lodash.min.js"></script>
<script src="http://webapi.xfyun.cn/demo/vio/js/lib/autobahn.min.js"></script>
<script src="http://webapi.xfyun.cn/demo/vio/js/lib/vad.js"></script>
</head>
<body>
<div>
<label>翻译前:</label>
<textarea id="sourceText" rows="5" cols="50"></textarea>
</div>
<div>
<button id="translateBtn">翻译</button>
</div>
<div>
<label>翻译后:</label>
<textarea id="targetText" rows="5" cols="50"></textarea>
</div>
<div>
<button id="speakBtn">语音播报</button>
<audio id="targetAudio" src=""></audio>
</div>
<script>
var translateBtn = document.getElementById('translateBtn');
var sourceText = document.getElementById('sourceText');
var targetText = document.getElementById('targetText');
var speakBtn = document.getElementById('speakBtn');
var targetAudio = document.getElementById('targetAudio');
var appid = 'your_appid';
var apikey = 'your_apikey';
var apisecret = 'your_apisecret';
var url = 'http://api.xfyun.cn/v1/service/v1/mt';
var engine_type = 'sms16k';
var voice_name = 'xiaoyan';
var vad = new VAD({ mode: VAD.Mode.NORMAL });
// 获取当前时间戳
function getCurrentTimestamp() {
return Math.floor(Date.now() / 1000);
}
// 获取签名
function getSignature(ts) {
var signature = CryptoJS.enc.Base64.stringify(
CryptoJS.HmacSHA1(apikey + ts, apisecret)
);
return signature;
}
// 翻译
function translate() {
var xhr = new XMLHttpRequest();
var ts = getCurrentTimestamp();
var signature = getSignature(ts);
xhr.open('POST', url, true);
xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
xhr.setRequestHeader('X-Appid', appid);
xhr.setRequestHeader('X-CurTime', ts);
xhr.setRequestHeader('X-Param', 'eyJlbmdpbmUiOiJ0cnVlIiwic3RhdHVzIjoiYmFkIn0=');
xhr.setRequestHeader('X-CheckSum', signature);
xhr.onreadystatechange = function() {
if (xhr.readyState === 4) {
if (xhr.status === 200) {
var result = JSON.parse(xhr.responseText);
targetText.value = result.data.result.trans_result.dst;
var audioUrl = 'http://tts.baidu.com/text2audio?lan=' + result.data.src + '&ie=UTF-8&spd=5&text=' + encodeURIComponent(result.data.result.trans_result.dst);
targetAudio.src = audioUrl;
targetAudio.play();
} else {
console.log('翻译失败');
}
}
};
var formData = new FormData();
formData.append('from', 'cn');
formData.append('to', 'en');
formData.append('engine_type', engine_type);
formData.append('voice_name', voice_name);
formData.append('text', sourceText.value);
xhr.send(formData);
}
translateBtn.addEventListener('click', function() {
translate();
});
speakBtn.addEventListener('click', function() {
targetAudio.play();
});
vad.onVoiceStart = function() {
console.log('检测到说话开始');
};
vad.onVoiceEnd = function() {
console.log('检测到说话结束');
translate();
};
navigator.mediaDevices.getUserMedia({ audio: true })
.then(function(stream) {
var mediaRecorder = new MediaRecorder(stream);
var chunks = [];
mediaRecorder.ondataavailable = function(e) {
chunks.push(e.data);
};
mediaRecorder.onstop = function() {
var blob = new Blob(chunks, { 'type': 'audio/wav; codecs=opus' });
var reader = new FileReader();
reader.onload = function() {
var audioData = reader.result;
vad.processAudio(audioData);
};
reader.readAsArrayBuffer(blob);
};
setInterval(function() {
if (mediaRecorder.state === 'recording') {
mediaRecorder.stop();
} else {
mediaRecorder.start();
}
}, 1000);
})
.catch(function(err) {
console.log('无法访问麦克风:', err);
});
</script>
</body>
</html>
//后端代码
var express = require('express');
var bodyParser = require('body-parser');
var cors = require('cors');
var md5 = require('md5');
var request = require('request');
var app = express();
app.use(cors());
app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.json());
var appid = 'your_appid';
var apikey = 'your_apikey';
var apisecret = 'your_apisecret';
var url = 'http://api.xfyun.cn/v1/service/v1/mt';
var engine_type = 'sms16k';
var voice_name = 'xiaoyan';
// 获取当前时间戳
function getCurrentTimestamp() {
return Math.floor(Date.now() / 1000);
}
// 获取签名
function getSignature(ts) {
var signature = md5(apikey + ts + apisecret);
return signature;
}
// 翻译
app.post('/translate', function(req, res) {
var ts = getCurrentTimestamp();
var signature = getSignature(ts);
var formData = {
from: 'cn',
to: 'en',
engine_type: engine_type,
voice_name: voice_name,
text: req.body.text
};
var options = {
url: url,
headers: {
'Content-Type': 'application/x-www-form-urlencoded',
'X-Appid': appid,
'X-CurTime': ts,
'X-Param': 'eyJlbmdpbmUiOiJ0cnVlIiwic3RhdHVzIjoiYmFkIn0=',
'X-CheckSum': signature
},
form: formData
};
request.post(options, function(error, response, body) {
if (!error && response.statusCode == 200) {
res.json(JSON.parse(body));
} else {
res.sendStatus(500);
}
});
});
app.listen(3000, function() {
console.log('App listening on port 3000!');
});