mysql字段转换为HTML模板（python unicode解码错误）

Question

I need to send fields from a mysql query to a HTML template select. 我需要将字段从mysql查询发送到HTML模板选择。 This is my python code: 这是我的python代码：

class Estilos(webapp2.RequestHandler):
def get(self):
    db = .....
    cursor = db.cursor()
    cursor.execute('SELECT estilo, n1 FROM estilos;')
    lista = []
    for row in cursor.fetchall():
     lista.append([cgi.escape(row[0]),
                  cgi.escape(row[1])
                  ])

    variables = {'lista':lista}

    template = JINJA_ENVIRONMENT.get_template('estilo.html')
    self.response.write(template.render(variables))
    db.close()

This is my HTML template: 这是我的HTML模板：

<html>
  <form action="/sign" method="post">
    <br />
    <div>Estilo: <select name="estilo" style="width:400px"> 
        {% for e in lista %}
              <option value="{{ e }}">{{ e }}                      
              </option>
            {% endfor %}
             </select>
             </div>

    <div> N1: <select name="n1" style="width:400px"> 
        {% for e in lista %}
              <option value="{{ e }}" >{{ e }}                      
              </option>
            {% endfor %}
             </select>
             </div>

    <div><input type="submit" value="Selecionar"></div>
  </form>

This code shows the entire row in the select field: ['STRONG PALE ALE', 'ALE'] 此代码在选择字段中显示整行：['STRONG PALE ALE'，'ALE']

When I change the form select value to 当我将表单选择值更改为

                  <option value="{{ e[0] }}">{{ e[0] }}                      
              </option>

then I get a unicode decode error. 然后我得到一个unicode解码错误。

<option value="{{ e[0] }}">{{ e[0] }} UnicodeDecodeError: 'ascii' codec can't decode byte 0xc4 in position 1: ordinal not in range(128)

I have tried to encode the cgi.escape to utf8 but I cannot make it work. 我尝试将cgi.escape编码为utf8，但无法使其正常工作。 Does anybody know how to fix this? 有人知道如何解决此问题吗？ What is the correct way to encode the string? 编码字符串的正确方法是什么？

Answer 1

Taking literally every detail reported (ie assuming you made absolutely no mistakes in reporting nor mixed up different versions of your code) I'd be stumped: that \\xc4 (uppercase A with umlaut, if eg latin-1) springs out of nowhere 从字面上理解报告的每个细节（即假设您在报告中完全没有错误，也没有混淆代码的不同版本），我会感到很\\xc4 ： \\xc4 （大写字母A，带有\\xc4 ，例如latin-1）从任何地方冒出来

However, the OP confirmed in a comment that he was actually mixing up different versions of the code, in which case...: 然而，在OP评论证实，他实际上是混合了不同版本的代码，在这种情况下... ...：

A good idea is to use cgi.escape(row[0].decode('ascii','replace')) &c, and see where question marks replace characters that were expected. 一个好主意是使用cgi.escape(row[0].decode('ascii','replace')) ＆c，并查看问号在哪里替换期望的字符。 The OP confirmed in a comment this worked for them. OP在评论中确认这对他们有用。

For completeness, thinking of future readers with similar problems: if decode shows nothing, they could try encode instead, but that will likely give the same UnicodeDecodeError originally reported by the OP. 为了完整起见，请考虑有类似问题的未来读者：如果decode没有显示任何内容，则他们可以尝试encode ，但是可能会给出与OP最初报告的相同的UnicodeDecodeError 。

mysql字段转换为HTML模板（python unicode解码错误）

问题描述

1 个解决方案

解决方案1
0 2015-02-04 01:03:01

mysql字段转换为HTML模板（python unicode解码错误）

问题描述

1 个解决方案

解决方案1 0 2015-02-04 01:03:01

解决方案1
0 2015-02-04 01:03:01