"summary": "${summary!?json_string}"
时间: 2023-08-14 17:11:30 浏览: 57
在Freemarker中,`${summary!?json_string}`是一种模板语法。它的作用是将变量 `summary` 转换为 JSON 字符串格式。当 `summary` 是一个对象或集合时,该语法可以将其转换为 JSON 字符串表示形式,方便在模板中输出或传递给其他组件使用。
例如,假设 `summary` 是一个包含一些数据的对象,可以使用 `${summary!?json_string}` 将其转换为 JSON 字符串:
```
{
"key1": "value1",
"key2": "value2",
...
}
```
然后可以在模板中使用该字符串进行输出或其他操作。这在处理动态内容和数据交换时非常有用。
相关问题
package main import ( "bytes" "encoding/json" "fmt" "net/http" "github.com/gin-gonic/gin" ) type AlertData struct { Receiver string `json:"receiver"` Status string `json:"status"` Alerts []Alert `json:"alerts"` GroupLabels map[string]string `json:"groupLabels"` CommonLabels map[string]string `json:"commonLabels"` CommonAnnotations map[string]string `json:"commonAnnotations"` ExternalURL string `json:"externalURL"` } type Alert struct { Status string `json:"status"` Labels map[string]string `json:"labels"` Annotations map[string]string `json:"annotations"` } func main() { router := gin.Default() router.POST("/webhook", handleWebhook) router.Run(":8080") } func handleWebhook(c *gin.Context) { var alertData AlertData err := c.BindJSON(&alertData) if err != nil { c.JSON(http.StatusBadRequest, gin.H{"error": "Error decoding JSON"}) return } // Process the received alert data for _, alert := range alertData.Alerts { // Extract information from alert alertName := alert.Labels["alertname"] instance := alert.Labels["instance"] severity := alert.CommonLabels["severity"] description := alert.Annotations["description"] summary := alert.Annotations["summary"] // Compose the message to be sent to Enterprise WeChat group using Markdown format message := fmt.Sprintf(`**Alert Name:** %s **Instance:** %s **Severity:** %s **Description:** %s **Summary:** %s`, alertName, instance, severity, description, summary) // Send the message to Enterprise WeChat group using the WeChat bot API sendToEnterpriseWeChatGroup(message) } c.JSON(http.StatusOK, gin.H{"message": "Alerts processed successfully"}) } func sendToEnterpriseWeChatGroup(message string) { // Replace 'YOUR_WECHAT_BOT_URL' with the actual URL of your Enterprise WeChat bot wechatBotURL := "YOUR_WECHAT_BOT_URL" data := map[string]interface{}{ "msgtype": "markdown", "markdown": map[string]string{ "content": message, }, } jsonData, _ := json.Marshal(data) _, err := http.Post(wechatBotURL, "application/json", bytes.NewReader(jsonData)) if err != nil { fmt.Println("Error sending message to Enterprise WeChat group:", err) } } 将以上代码拆分成多个模块
将以上代码拆分为多个模块,可以按照以下方式进行组织:
**main.go:**
```go
package main
import (
"github.com/gin-gonic/gin"
"net/http"
)
func main() {
router := gin.Default()
router.POST("/webhook", handleWebhook)
router.Run(":8080")
}
```
**alert.go:**
```go
package main
type AlertData struct {
Receiver string `json:"receiver"`
Status string `json:"status"`
Alerts []Alert `json:"alerts"`
GroupLabels map[string]string `json:"groupLabels"`
CommonLabels map[string]string `json:"commonLabels"`
CommonAnnotations map[string]string `json:"commonAnnotations"`
ExternalURL string `json:"externalURL"`
}
type Alert struct {
Status string `json:"status"`
Labels map[string]string `json:"labels"`
Annotations map[string]string `json:"annotations"`
}
```
**webhook.go:**
```go
package main
import (
"bytes"
"encoding/json"
"fmt"
"github.com/gin-gonic/gin"
"net/http"
)
func handleWebhook(c *gin.Context) {
var alertData AlertData
err := c.BindJSON(&alertData)
if err != nil {
c.JSON(http.StatusBadRequest, gin.H{"error": "Error decoding JSON"})
return
}
// Process the received alert data
for _, alert := range alertData.Alerts {
// Extract information from alert
alertName := alert.Labels["alertname"]
instance := alert.Labels["instance"]
severity := alert.CommonLabels["severity"]
description := alert.Annotations["description"]
summary := alert.Annotations["summary"]
// Compose the message to be sent to Enterprise WeChat group using Markdown format
message := fmt.Sprintf(`**Alert Name:** %s
**Instance:** %s
**Severity:** %s
**Description:** %s
**Summary:** %s`,
alertName, instance, severity, description, summary)
// Send the message to Enterprise WeChat group using the WeChat bot API
sendToEnterpriseWeChatGroup(message)
}
c.JSON(http.StatusOK, gin.H{"message": "Alerts processed successfully"})
}
```
**wechat.go:**
```go
package main
import (
"bytes"
"encoding/json"
"fmt"
"net/http"
)
func sendToEnterpriseWeChatGroup(message string) {
// Replace 'YOUR_WECHAT_BOT_URL' with the actual URL of your Enterprise WeChat bot
wechatBotURL := "YOUR_WECHAT_BOT_URL"
data := map[string]interface{}{
"msgtype": "markdown",
"markdown": map[string]string{
"content": message,
},
}
jsonData, _ := json.Marshal(data)
_, err := http.Post(wechatBotURL, "application/json", bytes.NewReader(jsonData))
if err != nil {
fmt.Println("Error sending message to Enterprise WeChat group:", err)
}
}
```
通过将不同功能的代码拆分到不同的模块中,可以更好地组织代码,提高代码的可读性和可维护性。在`main.go`中导入其他模块,并在适当的地方调用相应的函数即可。
微信支付通知说数据以JSON 格式通过请求主体(BODY)传输,用java写个接口 该怎么接收呢,数据如下:{ "id": "EV-2018022511223320873", "create_time": "2015-05-20T13:29:35+08:00", "resource_type": "encrypt-resource", "event_type": "TRANSACTION.SUCCESS", "summary": "支付成功", "resource": { "original_type": "transaction", "algorithm": "AEAD_AES_256_GCM", "ciphertext": "", "associated_data": "", "nonce": "" } }
要接收通过请求主体(BODY)传输的JSON格式数据,你可以使用Java的Servlet API或Spring框架提供的功能。下面我将为你展示如何使用Servlet API来接收JSON数据。
首先,在你的Servlet类中,你需要重写doPost方法来处理POST请求和接收JSON数据。在doPost方法中,你可以使用HttpServletRequest对象获取请求主体的输入流,并将其转换为字符串。
然后,你可以使用Jackson库将JSON字符串转换为Java对象,以便进一步处理数据。
下面是一个示例代码:
```java
import com.fasterxml.jackson.databind.ObjectMapper;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class PaymentNotificationServlet extends HttpServlet {
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// 获取请求主体的输入流
BufferedReader reader = new BufferedReader(new InputStreamReader(request.getInputStream()));
StringBuilder sb = new StringBuilder();
String line;
while ((line = reader.readLine()) != null) {
sb.append(line);
}
String jsonBody = sb.toString();
// 将JSON字符串转换为Java对象
ObjectMapper objectMapper = new ObjectMapper();
PaymentNotification paymentNotification = objectMapper.readValue(jsonBody, PaymentNotification.class);
// 处理支付通知逻辑
String id = paymentNotification.getId();
String eventType = paymentNotification.getEventType();
// 其他处理...
// 返回响应
response.setStatus(HttpServletResponse.SC_OK);
response.getWriter().write("success");
}
}
```
在上述示例代码中,我们重写了doPost方法来处理POST请求。我们首先从HttpServletRequest对象中获取请求主体的输入流,并将其转换为字符串。
然后,我们使用ObjectMapper类将JSON字符串转换为PaymentNotification对象。注意,需要在类路径中添加Jackson库的相关依赖。
接下来,你可以根据需要处理支付通知的逻辑,例如更新订单状态等。
最后,我们设置响应的状态码为200,并返回一个字符串"success"作为成功处理的标识。
这是一个使用Servlet API接收JSON数据的示例代码。你可以根据自己的需求进行修改和完善。希望对你有帮助!