英文:
How to print new lines in Golang template?
问题
我在MySQL中存储了一些内容，看起来像这样。
"Hi!\nHow are you?\nHere is the link you wanted:\nhttp://www.google.com"
当我在Golang模板中打印它时，它没有正确解析。我的意思是所有内容都显示在一行上。
它应该打印如下：
Hi!
How are you?
Here is the link you wanted:
http://www.google.com
这是我的模板代码。
<tr>
<td>TextBody</td>
<td>{{.Data.Content}}</td>
</tr>
我漏掉了什么吗？
英文:
I have stored some content in MySQL that looks like this.
"Hi!\nHow are you?\nHere is the link you wanted:\nhttp://www.google.com"
When I print it in Golang template, its not parsing correctly. I mean everything displayed in one line.
Its supposed to print like this
Hi!
How are you?
Here is the link you wanted:
http://www.google.com
Here is my template code.
<tr>
<td>TextBody</td>
<td>{{.Data.Content}}</td>
</tr>
Am I missing something?
答案1
得分: 2
在这里，您可以使用Split函数来解析字符串并使用sep作为分隔符将子字符串拆分为片段。
package main
import (
"fmt"
"strings"
)
func main() {
txt := "Hi!\nHow are you?\nHere is the link you wanted:\nhttp://www.google.com"
res := strings.Split(txt, "\n")
for _, val := range res {
fmt.Println(val)
}
}
输出将是：
Hi!
How are you?
Here is the link you wanted:
http://www.google.com
在Go Playground上的示例。
英文:
Here you can use the Split function to parse the string and split the substring into slices using the sep as separator.
package main
import (
"fmt"
"strings"
)
func main() {
txt := "Hi!\nHow are you?\nHere is the link you wanted:\nhttp://www.google.com"
res := strings.Split(txt, "\n")
for _, val := range res {
fmt.Println(val)
}
}
The output will be:
Hi!
How are you?
Here is the link you wanted:
http://www.google.com
Example on Go Playground.
答案2
得分: 2
要在浏览器中打印此内容，请将\n替换为例如<br>，例如body = strings.Replace(body, "\n", "<br>", -1)。请参阅以下示例代码：
package main
import (
"bytes"
"fmt"
"html/template"
"log"
"net/http"
"strings"
)
func main() {
http.HandleFunc("/", ServeHTTP)
if err := http.ListenAndServe(":80", nil); err != nil {
log.Fatal(err)
}
}
func ServeHTTP(w http.ResponseWriter, r *http.Request) {
html := `
<!DOCTYPE html>
<html>
<body>
<table style="width:100%">
<tr>
<th>Data</th>
<th>Content</th>
</tr>
<tr>
<td>{{.Data}}</td>
<td>{{.Content}}</td>
</tr>
</table>
</body>
</html>
`
st := "Hi!\nHow are you?\nHere is the link you wanted:\nhttp://www.google.com"
data := DataContent{"data", st}
buf := &bytes.Buffer{}
t := template.Must(template.New("template1").Parse(html))
if err := t.Execute(buf, data); err != nil {
panic(err)
}
body := buf.String()
body = strings.Replace(body, "\n", "<br>", -1)
fmt.Fprint(w, body)
}
type DataContent struct {
Data, Content string
}
要查看输出，请运行此代码并在浏览器中打开http://127.0.0.1/。
另请参阅：https://stackoverflow.com/questions/13779027/html-templates-replacing-newlines-with-br
希望对您有所帮助。
英文:
To print this in browser, replace \n with e.g. <br>
like body = strings.Replace(body, "\n", "<br>", -1)
See this working sample code:
package main
import (
"bytes"
"fmt"
"html/template"
"log"
"net/http"
"strings"
)
func main() {
http.HandleFunc("/", ServeHTTP)
if err := http.ListenAndServe(":80", nil); err != nil {
log.Fatal(err)
}
}
func ServeHTTP(w http.ResponseWriter, r *http.Request) {
html := `
<!DOCTYPE html>
<html>
<body>
<table style="width:100%">
<tr>
<th>Data</th>
<th>Content</th>
</tr>
<tr>
<td>{{.Data}}</td>
<td>{{.Content}}</td>
</tr>
</table>
</body>
</html>
`
st := "Hi!\nHow are you?\nHere is the link you wanted:\nhttp://www.google.com"
data := DataContent{"data", st}
buf := &bytes.Buffer{}
t := template.Must(template.New("template1").Parse(html))
if err := t.Execute(buf, data); err != nil {
panic(err)
}
body := buf.String()
body = strings.Replace(body, "\n", "<br>", -1)
fmt.Fprint(w, body)
}
type DataContent struct {
Data, Content string
}
To see the output, run this code and open your browser at http://127.0.0.1/
Also see: https://stackoverflow.com/questions/13779027/html-templates-replacing-newlines-with-br
I hope this helps.
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